Hospital-Based Pediatric Quality Improvement Interventions and Health Disparities: A Scoping Review of the Literature

BACKGROUND AND OBJECTIVES

Quality improvement (QI) has the potential to reduce health disparities through multiple mechanisms, including by standardizing care and addressing social barriers to health. National organizations require that hospital systems integrate equity into quality efforts, but effective approaches remain unclear. We aimed to examine the association of hospital-based pediatric QI interventions and racial and ethnic, language, and socioeconomic disparities in health outcomes.

METHODS

Quantitative studies from January 1, 2000 to December 11, 2023 reporting the effects of pediatric hospital-based QI were selected from PubMed and Embase. Studies were excluded if outcomes were not stratified by race and ethnicity, language, or socioeconomic status. Studies were reviewed in duplicate for inclusion and by 1 author for data extraction.

RESULTS

A total of 22 studies were included. Most studies (n = 19, 86%) revealed preexisting disparities, and 68% of those (n = 13) found disparities reductions post-intervention. Studies with disparity-focused objectives or interventions more commonly found reduced disparities than studies of general QI (85% vs 33%). Hospital-based process standardization was associated with reduced disparities in provider practices. Most interventions associated with reduced disparities in patient-facing outcomes involved community/ambulatory partnership. Limitations included potential exclusion of relevant studies, topic heterogenity, and risk of bias.

CONCLUSIONS

Although the authors of few published hospital-based QI initiatives assessed their equity effect, intentionally designed QI studies were associated with reduced disparities. Interventions focused on care standardization may reduce disparities in care quality, although multilevel interventions are likely needed to affect the health care structures that influence more significant patient outcomes.

Longitudinal Associations of Food Security with Health and Dietary Factors among Food FARMacy Participants during COVID-19 in New York City

In cross-sectional studies, food insecurity is associated with adverse health and dietary outcomes. Whether self-reported health and dietary outcomes change in response to improvements in food security has not been examined. We sought to examine how increases in food security are related to changes in health and dietary factors. In this longitudinal, observational study, we included adult participants in a clinical-community emergency food assistance program in New York City from July 2020 to November 2021. Program staff measured food security with a validated six-item measure at program enrollment and six-month re-enrollment. Participants self-reported health and dietary factors (vegetable, fruit, juice, and sugar-sweetened beverage (SSB) consumption frequency). We used multivariable regression to examine associations between change in food security with change in health and dietary factors over six months. Among 310 participants, the mean food security score improved by 1.7 ± 2.3 points over six months. In unadjusted models, each point improvement in food security was associated with increased vegetable (β = 0.10 times; 95% CI: 0.05-0.15); fruit (β = 0.08 times; 95% CI: 0.03-0.14); and juice (β = 0.10 times; 95% CI: 0.05-0.15) consumption. In adjusted models, results remained significant for vegetable and fruit consumption, but not juice. Change in food security was not associated with change in health or SSB outcomes. In this cohort during COVID-19, improved food security was associated with improved vegetable and fruit consumption. Randomized trials that examine the effectiveness of clinical-community partnerships focused on improving food security and nutrition are warranted.

The Role of an Early Childhood Community Health Worker in Addressing Psycho-Social Needs in the Perinatal and Early Childhood Period

OBJECTIVE

Addressing family psychosocial and mental health needs in the perinatal and early childhood period has a significant impact on long-term maternal and child health and is key to achieving health equity. We aimed to (1) describe and evaluate the role of an Early Childhood Community Health Worker (EC-CHW) to address psychosocial needs and improve psychosocial well-being for families in the perinatal period, and (2) examine factors associated with completion of goals.

METHODS

An EC-CHW program was modeled after an existing hospital CHW program for children with special healthcare needs and chronic disease. An evaluation was conducted using repeated measures to assess improvements in psychosocial outcomes such as family stress and protective factors after participating in the EC-CHW program. Linear regression was also used to assess factors associated with completion of goals.

RESULTS

Over a 21-month period (January 2019-September 2020), 161 families were referred to the EC-CHW. The most common reasons for referral included social needs and navigating systems for child developmental and behavioral concerns. There were high rates of family engagement in services (87%). After 6 months, families demonstrated statistically significant improvements in protective factors including positive parenting knowledge and social support. Only 1 key predictor variable, maternal depression, showed significant associations with completion of goals in the multivariable analysis.

CONCLUSIONS

This study demonstrated the need for, and potential impact of an EC-CHW in addressing psychosocial and mental health needs in the perinatal period, and in a primary care setting. Impacts on protective factors are promising.

Participant and Stakeholder Perceptions of the Food FARMacy Emergency Food Assistance Program for the Coronavirus Disease 2019 Pandemic: A Qualitative Study

BACKGROUND

Food FARMacy is a clinical-community emergency food assistance program developed in response to food insecurity during the COVID-19 pandemic. Few qualitative studies have examined participant, and clinical and community stakeholder experiences with these food assistance programs.

OBJECTIVE

To examine the motivations, experiences, and perceptions of Food FARMacy participants and program stakeholders.

DESIGN

A qualitative study using in-depth interviews between March 2021 and July 2021.

PARTICIPANTS AND SETTING

Twenty-four Food FARMacy participants and 10 program stakeholders in New York, NY (Manhattan, Brooklyn, and Queens) older than age 18 years were interviewed.

STATISTICAL ANALYSES PERFORMED

Interviews were recorded, transcribed, translated, and analyzed using thematic analysis. Participant and program stakeholder interviews were analyzed separately. Themes that were salient in both groups were combined for reporting.

RESULTS

Both program participants and stakeholders perceived: pandemic-related demands combined with reduced resources motivated participation; convenience, safety, and ease of access facilitated program retention; participants valued fresh produce and diversity of foods; the program improved diet and health; minimizing food waste was a priority; and social cohesion was an unexpected program benefit. Two additional themes among only program stakeholders also were identified: aligned values, flexibility, and communication were key to successful partnerships; and trust between community partners and community members drove programmatic success.

CONCLUSIONS

Results suggest that a multisite clinical-community partnership to provide emergency food assistance in New York City can be leveraged to reduce barriers to healthy food access and address food insecurity during crises.

4D printing of biodegradable elastomers with tailorable thermal response at physiological temperature

4D printing has a great potential for the manufacturing of soft robotics and medical devices. The alliance of digital light processing (DLP) 3D printing and novel shape-memory photopolymers allows for the fabrication of smart 4D-printed medical devices in high resolution and with tailorable functionalities. However, most of the reported 4D-printed materials are nondegradable, which limits their clinical applications. On the other hand, 4D printing of biodegradable shape-memory elastomers is highly challenging, especially when transition points close to physiological temperature and shape fixation under ambient conditions are required. Here, we report the 4D printing of biodegradable shape-memory elastomers with tailorable transition points covering physiological temperature, by using poly(D,L-lactide-co-trimethylene carbonate) methacrylates at various monomer feed ratios. After the programming step, the high-resolution DLP printed stents preserved their folded shape at room temperature, and showed efficient shape recovery at 37 °C. The materials were cytocompatible and readily degradable under physiological conditions. Furthermore, drug-loaded devices with tuneable release kinetics were realized by DLP-printing with resins containing polymers and levofloxacin or nintedanib. This study offers a new perspective for the development of next-generation 4D-printed medical devices.

Social Determinants of Health Screening and Management: Lessons at a Large, Urban Academic Health System

BACKGROUND

In October 2022 a multisite social determinants of health screening initiative was expanded across seven emergency departments of a large, urban hospital system. The aim of the initiative was to identify and address those underlying social needs that frequently interfere with a patient's health and well-being, often resulting in increased preventable system utilization.

METHODS

Building on an established Patient Navigator Program, an existing screening process, and long-standing community-based partnerships, an interdisciplinary workgroup was formed to develop and implement the initiative. Technical and operational workflows were developed and implemented, and new staff members were hired and trained to screen and support patients with identified social needs. In addition, a community-based organization network was formed to explore and test social service referral strategies.

RESULTS

Within the first five months of implementation, more than 8,000 patients were screened across seven emergency departments (EDs), of which 17.3% demonstrated a social need. Patient Navigators see between 5% and 10% of total nonadmitted ED patients. Among the three social needs of focus, housing presented as the greatest need (10.2%), followed by food (9.6%) and transportation (8.0%). Among patients identified as rising/high risk (728), 50.0% accepted support and are actively working with a Patient Navigator.

CONCLUSION

There is growing evidence to support the link between unmet social needs and poor health outcomes. Health care systems are uniquely positioned to provide whole person care by identifying unresolved social needs and by building capacity within local community-based organizations to support those needs.

Association of a primary care-based mobile food pantry with child body mass index: A propensity score matched cohort study

OBJECTIVE

To test the hypothesis that children in Food FARMacia-a six-month food insecurity intervention from May 2019 to January 2020-would have smaller age-adjusted, sex-specific body mass index (BMIz) gains than matched counterparts.

METHODS

In this proof-of-concept study, we performed a difference-in-differences (DiD) analysis of a propensity-score matched cohort among paediatric primary care patients aged <6 years with household food insecurity. Children with anthropometric measures prior to and after intervention started were included. The main outcome was child BMIz from standardized clinical anthropometric measurements. We examined differences in child BMIz change between Food FARMacia participants and matched non-participants.

RESULTS

Among 454 children with household food insecurity, 265 were included, 44 of whom were in Food FARMacia. Mean child age was 1.48 (SD 1.46) years and most reported Hispanic/Latino ethnicity (84.5%). After propensity score matching, children in Food FARMacia had smaller increases in BMIz (unadjusted DiD -0.28 [-0.52, -0.04]) compared to non-participants in the follow-up period. After adjusting for potential confounders, findings remained statistically significant [adjusted DiD, -0.31 units (95% CI: -0.54, -0.08)].

CONCLUSIONS

In this proof-of-concept cohort study of children in households with food insecurity, a paediatric primary care-based mobile food pantry program was associated with improvement in child BMIz over 6 months.

The Ornaments of the Arma Veirana Early Mesolithic Infant Burial

Personal ornaments are widely viewed as indicators of social identity and personhood. Ornaments are ubiquitous from the Late Pleistocene to the Holocene, but they are most often found as isolated objects within archaeological assemblages without direct evidence on how they were displayed. This article presents a detailed record of the ornaments found in direct association with an Early Mesolithic buried female infant discovered in 2017 at the site of Arma Veirana (Liguria, Italy). It uses microscopic, 3D, and positional analyses of the ornaments as well as a preliminary perforation experiment to document how they were perforated, used, and what led to their deposit as part of the infant's grave goods. This study provides important information on the use of beads in the Early Mesolithic, in general, as well as the relationship between beads and young subadults, in particular. The results of the study suggest that the beads were worn by members of the infant's community for a considerable period before they were sewn onto a sling, possibly used to keep the infant close to the parents while allowing their mobility, as seen in some modern forager groups. The baby was then likely buried in this sling to avoid reusing the beads that had failed to protect her or simply to create a lasting connection between the deceased infant and her community.

Supplementary Information

The online version contains supplementary material available at 10.1007/s10816-022-09573-7.

A Pediatric Resident Curriculum for the Use of Health Literacy Communication Tools

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Feasibility of Food FARMacia: Mobile Food Pantry to Reduce Household Food Insecurity in Pediatric Primary Care

Despite recommendations for systematic food insecurity screening in pediatric primary care, feasible interventions in clinical settings are lacking. The goal of this study was to examine reach, feasibility, and retention in Food FARMacia, a pilot clinically based food insecurity intervention among children aged <6 years. We examined electronic health record data to assess reach and performed a prospective, longitudinal study of families in Food FARMacia (May 2019 to January 2020) to examine attendance and retention. We used descriptive statistics and bivariate analyses to assess outcomes. Among 650 pediatric patients, 172 reported household food insecurity and 50 registered for Food FARMacia (child mean age 22 ± 18 months; 88% Hispanic/Latino). Demographic characteristics of Food FARMacia participants were similar to those of the target group. Median attendance rate was 75% (10 sessions) and retention in both the study and program was 68%. Older child age (retention: age 26.7 ± 18.7 months vs. attrition: age 12.1 ± 13.8 months, p = 0.01), Hispanic/Latino ethnicity (retention: 97% vs. attrition: 69%, p < 0.01), and larger household size (retention: 4.5 ± 1.1 vs. attrition: 3.7 ± 1.4, p = 0.04) correlated with retention. A clinically based mobile food pantry pilot program and study reached the target population and were feasible.

Personalized Reminders for Immunization Using Short Messaging Systems to Improve Human Papillomavirus Vaccination Series Completion: Parallel-Group Randomized Trial

Background

Completion rates among adolescents who initiate the human papillomavirus (HPV) vaccine 3-dose series are low. SMS text message vaccine reminders are effective, but less is known about the best types for HPV series completion or the ability to assess and target vaccine decision-making stage.

Objective

The aim of this study is to compare the effectiveness of HPV vaccine series completion in minority adolescents who received precision and educational versus conventional SMS text message reminders.

Methods

Enrolled parents of adolescents aged 9-17 years who received the first HPV vaccine dose at 1 of the 4 academic-affiliated community health clinics in New York City were randomized 1:1 to 1 of the 2 parallel, unblinded arms: precision SMS text messages (which included stage-targeted educational information, next dose due date, and site-specific walk-in hours) or conventional SMS text messages without educational information. Randomization was stratified according to gender, age, and language. The primary outcome was series completion within 12 months. In post hoc analysis, enrollees were compared with concurrent nonenrollees and historical controls.

Results

Overall, 956 parents were enrolled in the study. The precision (475 families) and conventional (481 families) SMS text message arms had similarly high series completion rates (344/475, 72.4% vs 364/481, 75.7%). A total of 42 days after the first dose, two-thirds of families, not initially in the preparation stage, moved to preparation or vaccinated stage. Those in either SMS text message arm had significantly higher completion rates than nonenrollees (708/1503, 47.1% vs 679/1503, 45.17%; P<.001). Even after removing those needing only 2 HPV doses, adolescents receiving any SMS text messages had higher completion rates than historical controls (337/2823, 11.93% vs 981/2823, 34.75%; P<.001). A population-wide effect was seen from 2014 to 2016, above historical trends.

Conclusions

SMS text message reminders led to timely HPV vaccine series completion in a low-income, urban, minority study population and also led to population-wide effects. Educational information did not provide an added benefit to this population.

Trial Registration

ClinicalTrials.gov NCT02236273; https://clinicaltrials.gov/ct2/show/NCT02236273

Pet ownership and mental health during COVID-19 lockdown

Owning a pet has often been associated with improved mental health among owners, including enhanced quality of life, and decreased levels of depression and loneliness. The aim of this study was to identify whether owning a cat and/or dog was associated with better psychological wellbeing during a strict lockdown period in Victoria, Australia, during the COVID-19 pandemic. Data were analysed from a large-scale mental health study: the COvid-19 and you: mentaL heaLth in AusTralia now survEy (COLLATE). The impact of pet ownership on levels of resilience, loneliness and quality of life were examined in a sample of 138 pet owners and 125 non-pet owners. Hierarchical linear regression analyses indicated that pet ownership was significantly associated with poorer quality of life, but not significantly associated with resilience or loneliness, after accounting for situational factors (e.g. job loss) and mood states. Contrary to expectations, the findings suggest that during a specific situation such as a pandemic, pets may contribute to increased burden among owners and contribute to poorer quality of life.

Pediatric Practice Redesign with Group Well Child Care Visits: A Multi-Site Study

OBJECTIVES

Multiple barriers exist to delivering efficient, effective well child care, especially in low-income, immigrant communities. Practice redesign strategies, including group well child care, have shown promise in improving care delivery and healthcare outcomes. To assess the feasibility of a group well child care program at multiple urban, academic practices caring for underserved, mostly immigrant children, and to evaluate health outcomes and process measures compared to traditional care.

METHODS

Prospective, intervention control study with participants recruited to group well child care visits or traditional visits during the first year of life. A culturally sensitive curriculum was designed based on American Academy of Pediatrics (AAP) recommendations. Process and health outcomes were analyzed via patient surveys and medical record information.

RESULTS

One hundred and one families enrolled in group care and 74 in traditional care. Group care participants had higher rates of all recommended postpartum depression screening and domestic violence screening (65% vs 37%, 38% vs 17% respectively), higher anticipatory guidance retention (67% vs 37%) and higher patient satisfaction with their provider. The group care redesign did not increase length of time spent in clinic.

CONCLUSIONS FOR PRACTICE

Group well child care is a feasible method for practice redesign, which allows for increased psychosocial screening and anticipatory guidance delivery and retention compared to traditional visits, for low income, predominantly immigrant families. Parental satisfaction with group care is higher and these visits provide greater face-to-face time with the provider, without increasing time spent in the practice.

Left Ventricular Assist Device Implantation in a COVID-19 Positive Patient

Introduction

Case Report

Summary

Extracorporeal Membrane Oxygenation Dependent COVID19 Hospital Transfers

Introduction

The World Health Organization has recorded over 8 Million cases of COVID19 as of October 2020. Despite receiving appropriate lung protective ventilation and medical treatment, some of these patients develop refractory hypoxemia and acute respiratory distress syndrome . Extracorporeal membrane oxygenation has been recognized as a lifesaving therapy for patients with ARDS secondary to COVID19. There are few centers in the United States equipped with the necessary staff and the experience to take care of such critically ill patients. Some patients are too ill to be transferred with conventional mechanical ventilation, and they require interhospital transport while on ECMO.

Case Report

We have developed a highly specialized ECMO Deployment Team dedicated to the cannulation and transport of COVID19 patients while on venous-venous (VV) ECMO or venous-arterial (VA) ECMO. We use routine bedside ECMO cannulation via bilateral femoral vessels configuration at the outside hospital. The patient is stabilized and transported by air or ground to one of our affiliated hospitals.Here we present a series of five patients who were cannulated by our team at an outside institution and transported while on ECMO support to one of our three system hospitals. Patient ages ranged between 49-64 years old. Four patients required VV ECMO for severe hypoxemia secondary to COVID19 ARDS. One patient required VA ECMO due to viral myocarditis secondary to COVID19. Time on ECMO ranged from 9-33 days. Three of the five patients recovered successfully and were discharged home, rehab or LTAC. One patient is still currently on ECMO and one patient is deceased. There were no reported or documented transmission of COVID19 to the members of the ECMO deployment team.

Summary

The potential for survival of the critically ill due to COVID19 often demands a higher level of care. However, stable transport to an appropriate institution presents a limiting factor. Our method of a dedicated ECMO Deployment Team appears to provide favorable outcome for these patients.

Relationship between dairy cows' hind leg activity and vacuum records during milking

In a number of dairy farms, a restlessness of hind legs of cows during milking can be observed for no apparent reason. Previous studies have associated the hind leg activity of cows with mental or physical discomfort. Aim of this study was to investigate whether the observed hind leg activity was influenced by the milking process. The analysis was performed for total milking period and also separately for the following milking periods: let-down, main milk flow and over-milking. The following variables were analyzed for their influence on dairy cows' hind leg activity: the vacuum level in the MPC and SMT, the length of the milking periods, the vacuum curve type, bimodal curves and the presence of teat-end hyperkeratosis. In turn, it was also investigated whether the cows' hyperkeratosis is influenced by milking duration, length of milking periods or by the vacuum level in the SMT. Measurements and observations were done in ten milking parlors, each visited twice. Four milking units per parlor were equipped with vacuum loggers (VaDia 2.0, BioControl AS, Norway). One observer recorded hind leg activity per up to four cows, using the following categories: (1) stepping (claw raised < 15 cm) and (2) kicking (claw raised > 15 cm). A powerful, purposive kick to milking unit/milker was classified as p-kick (3) initially. Due to a small number of p-kicks, they were added to the number of kickings for further analysis. The analyses showed that none of the milking process-related variables had a significant influence on the dairy cows' prevalence to show hind leg activity. Although the prevalence was not influenced, the type of hind leg activity was. The hind leg activity kicking was observed at significantly higher average mouthpiece chamber vacuum levels than steppings. Cows showing kickings had a higher degree of teat-end hyperkeratosis than those showing steppings. The degree of teat-end hyperkeratosis was related to the milking duration.

Social Determinants of Health and COVID-19 Among Patients in New York City

Background

Covid-19 testing and disease outcomes according to demographic and neighborhood characteristics must be understood.

Methods

Using aggregate administrative data from a multi-site academic healthcare system in New York from March 1 - May 14, 2020, we examined patient demographic and neighborhood characteristics according to Covid-19 testing and disease outcomes.

Results

Among the 23,918 patients, higher proportions of those over 65 years old, male sex, Hispanic ethnicity, Medicare, or Medicaid insurance had positive tests, were hospitalized, or died than those with younger age, non-Hispanic ethnicity, or private insurance. Patients living in census tracts with more non-White individuals, Hispanic individuals, individuals in poverty, or housing crowding had higher proportions of Covid-19 positive tests, hospitalizations, and deaths than counterparts.

Discussion

Variation exists in Covid-19 testing and disease outcomes according to patient and neighborhood characteristics. There is a need to monitor Covid-19 testing access and disease outcomes and resolve racist policies and practices.

Social Determinants of Health and COVID-19 Among Patients in New York City

Background: Covid-19 testing and disease outcomes according to demographic and neighborhood characteristics must be understood. Methods: Using aggregate administrative data from a multi-site academic healthcare system in New York from March 1 â€" May 14, 2020, we examined patient demographic and neighborhood characteristics according to Covid-19 testing and disease outcomes. Results: Among the 23,918 patients, higher proportions of those over 65 years old, male sex, Hispanic ethnicity, Medicare, or Medicaid insurance had positive tests, were hospitalized, or died than those with younger age, non-Hispanic ethnicity, or private insurance. Patients living in census tracts with more non-White individuals, Hispanic individuals, individuals in poverty, or housing crowding had higher proportions of Covid-19 positive tests, hospitalizations, and deaths than counterparts. Discussion: Variation exists in Covid-19 testing and disease outcomes according to patient and neighborhood characteristics. There is a need to monitor Covid-19 testing access and disease outcomes and resolve racist policies and practices.

Universal Screening of Social Determinants of Health at a Large US Academic Medical Center, 2018

Universal screenings for social determinants of health (SDOH) are feasible at the health system level and enable institutions to identify unmet social needs that would otherwise go undiscovered. NewYork-Presbyterian Hospital implemented SDOH screenings together with clinical screenings in four outpatient primary care sites. Aligning SDOH screening with clinical screening was crucial for establishing provider buy-in and ensuring sustainability of screening for SDOH. Despite some challenges, universal screening for SDOH has allowed NewYork-Presbyterian Hospital to identify unmet needs to improve population health.

[Symptomatic testicular metastasis of acinar adenocarcinoma of the prostate]

We report about the rare occurrence of symptomatic testicular metastasis of an acinar adenocarcinoma of the prostate. Testicular metastases are usually incidentally detected in patients treated with bilateral orchiectomy or more often during autopsy. In the literature, there are only a few clinical cases describing symptomatic testicular metastases. However, the possibility of such metastases should be considered in patients diagnosed with advanced prostate cancer. Testicular examination should be performed regularly, even in patients with low prostate-specific antigen levels.

Food Insecurity and Sugar-Sweetened Beverage Consumption Among WIC-Enrolled Families in the First 1,000 Days

OBJECTIVE

Determine the association between household food insecurity and habitual sugar-sweetened beverage (SSB) consumption among Special Supplemental Nutrition Program for Women, Infants, and Children (WIC)-enrolled families during the first 1,000 days.

METHODS

Cross-sectional analysis of pregnant women and mothers of infants aged under 2 years in the WIC was performed. Families recruited sequentially at consecutive visits completed food insecurity and beverage intake questionnaires; estimated logistic regression models controlled for sociodemographic characteristics.

RESULTS

Of 394 Hispanic/Latino mothers and 281 infants, 63% had household food insecurity. Food insecurity significantly increased odds of habitual maternal (unadjusted odds ratio (OR), 2.39; 95% CI, 1.27-4.47; P = .01) and infant SSB consumption (OR, 2.05; 95% CI, 1.15-3.65; P = .02), and the relationship was not attenuated by maternal age, education, or foreign-born status.

CONCLUSIONS AND IMPLICATIONS

Food insecurity increased odds of habitual SSB consumption in WIC families. Interventions to curb SSB consumption among WIC-enrolled families in the first 1,000 days in the context of household food insecurity are needed.

Constructed wetlands for combined sewer overflow treatment: A state-of-the-art review

Combined sewer overflows (CSOs) are a major source of surface water pollution and degradation. This is particularly visible where sewage collection with combined sewer and centralized treatment are well established, such as in Europe and North America: an overwhelming number of surface water bodies are in insufficient status of ecology, hydrology and physico-chemical parameters. Therefore, several countries have started implementing constructed wetlands (CWs) as mainstream on-spot treatment. This paper summarizes the main design approaches that can be adopted. We identified eight different schemes for the implementation of CSO-CWs, based on our international experience and documented by a literature analysis. The performance review includes conventional water quality parameters, as well as pathogen and emergent contaminant removal. Furthermore, modelling tools for advanced design and for understanding a wide applicability of these green infrastructures are presented. This paper also provides a review on other side benefits offered by the adoption of Nature-Based Solutions for CSO treatment, such as ecosystem services, and the most common issues related to their operation and maintenance. Our analysis has produced a list of key factors for design and operation, all derived from full-scale installations in operation up to more than ten years.

Development of an on-farm model to predict flow of fecal volatile solids to the liquid and solid handling systems of commercial California dairy farms

A source of methane (CH₄) emissions from dairy farms arefecal volatile solids (VS) produced by cattle, which is impacted by herd size, cattle type, feed intake/composition and farm management practices. Where cattle deposit fecal VS in their pen is important in this regard since that deposited on concrete, which will be handled and stored in a liquid form, is a likely source of CH₄ emissions, whereas fecal VS deposited on drylot surfaces will be handled and stored in a dry form and is a minor source of CH₄ emissions. Our objective was to create a model to assist dairy farmers and regulators make informed evaluations of impacts of dairy farm management practices on potential CH₄ emissions from fecal VS. Evaluation of initial model outputs led to on-farm data collection of the model inputs which influenced predicted fecal VS entering the liquid and solid manure handling systems. A key input limitation was lack of information on cattle fecal deposition locations within pens. Data collection used four dairy farms to measure time that cattle spent on concrete surfaces within day among season, as well as other model inputs. The final model, populated with collected data, showed that lactating cattle contribute the overwhelming proportion of fecal VS, 77% in the composite dairy farms, and that a composite freestall dairy farm had 65% of total fecal VS deposited on concrete annually with the remainder on drylot surfaces. In contrast, a composite drylot dairy farm had 37% of fecal VS deposited on concrete annually.

Thermionic microwave gun for terahertz and synchrotron light sources

Conventional thermionic microwave and radio frequency (RF) guns can offer high average beam current, which is important for synchrotron light and terahertz (THz) radiation source facilities, as well as for industrial applications. For example, the Advanced Photon Source at Argonne National Laboratory is a national synchrotron-radiation light source research facility that utilizes thermionic RF guns. However, these existing thermionic guns are bulky, difficult to handle and install, easily detuned, very sensitive to thermal expansion, and due for a major upgrade and replacement. In this paper, we present the design of a new, more stable, and reliable gun with optimized electromagnetic performance, improved thermal engineering, and a more robust cathode mounting technique, which is a critical step to improve the performance of existing and future light sources, industrial accelerators, and electron beam-driven THz sources. We will also present a fabricated gun prototype and show results of high-power and beam tests.

School-Based Mental Health Promotion and Prevention Program "Turn 2 Us" Reduces Mental Health Risk Behaviors in Urban, Minority Youth

BACKGROUND

Turn 2 Us (T2U) is an elementary school-based mental health promotion and prevention program in New York City. It targets fourth- and fifth-grade students at risk for social/emotional and behavioral problems and provides a range of services to students, staff, and parents. The purpose of this study is to determine if T2U decreases internalizing and externalizing behaviors in participating students.

METHODS

Teachers measured students' symptoms before and after participation using the strengths and difficulties questionnaire (SDQ). Change in the total SDQ score was analyzed using Wilcoxon rank-sum nonparametric testing. We assessed the effects of covariates on the score change with linear regression models.

RESULTS

The 185 unique students who participated in the intervention showed a significant improvement in total SDQ score (Z = -4.107, p < .001). Students who were at higher risk prior to the intervention showed greatest improvement in behaviors. None of the covariates assessed affected the change in SDQ score. Regression models showed that higher initial SDQ scores predicted higher post-intervention SDQ scores (β = 0.681, p < .001).

CONCLUSION

T2U significantly decreased internalizing and externalizing behaviors in participating students, with the greatest impact for highest risk students. This study helps validate T2U's unique and comprehensive approach.

Ristocetin and Botrocetin Involve Two Distinct Domains of von Willebrand Factor for Binding to Platelet Membrane Glycoprotein lb

We have evidence that ristocetin and botrocetin mediate binding of von Willebrand Factor (vWF) to platelet glycoprotein lb (GPIb) through two distinct domains on the vWF molecule. This was established by using monoclonal antibodies (MAbs) to vWF and synthetic peptides derived from the sequence of vWF. MAb 322 and MAb NMC/vW 4 both recognize native vWF as well as fragments containing the GPIb-binding domain of vWF, obtained with the following enzymes: trypsin (116 kDa), V-8 pro tease (Spill, 320 kDa) and V-8 protease plus subtilisin (33-28 kDa). Nevertheless, the lack of reciprocal displacement between the two MAbs in experiments of competitive inhibition for binding to vWF demonstrate that their respective epitopes are separate. Both MAbs inhibit 125I-vWF binding to platelet membrane GPIb and vWF-dependent platelet agglutination induced by ristocetin. However, only MAb NMC/vW4 inhibits these functions in the presence of botrocetin and when ristocetin-induced platelet agglutination is inhibited by MAb 322, botrocetin is still able to restore the agglutination. The involvement of two distinct domains of vWF for binding to GPIb in the presence of ristocetin or botrocetin was confirmed in experiments of binding of 125I-vWF to platelets using as competitor synthetic peptides corresponding to the GPIb binding domain of vWF (Cys 474 to Pro 488 and Ser 692 to Pro 708). At a final concentration of 2.5 mM both peptides inhibit more than 90% of the binding of vWF to ristocetin-treated platelets but are unable to modify this binding in the presence of botrocetin. In conclusion our data suggest that botrocetin and ristocetin involve distinct sites on vWF for binding to GPIb.

Familial Variant of Antithrombin III (AT III Bligny, 47Arg to His) Associated with Protein C Deficiency

The association of a variant of antithrombin III (AT III Bligny) and protein C deficiency is described in a 36-year-old patient having suffered from severe thrombotic episodes. His mother has protein C deficiency and showed a single episode of thrombophlebitis following surgery. His father, sister and daughter have the variant AT III and are asymptomatic. The abnormal AT III was characterized in plasma by the discrepancy between a normal progressive activity and a reduced heparin cofactor activity. This variant AT III was purified, separated from the normal protein by heparin-Sepharose chromatography and was eluted with increased NaCI concentrations. At pH 7.4, the variant AT III eluted at lower (0.3 to 0.5 M) NaCI concentrations than normal (1 to 1.5 M) AT III, thus demonstrating a decreased affinity for heparin. At pH 6.0, however, the abnormal molecule bound more avidly to heparin-Sepharose and was eluted like normal AT III at pH 7.4. Similarly, the heparin enhancement of intrinsic fluorescence of the variant AT III, markedly reduced at pH 7.4, was normalized at pH 6.0. The abnormal AT III showed a normal antiprotease activity, a normal molecular weight by SDS-PAGE, but displayed only a partial immunological identity with the normal protein. Analysis of amplified genomic DNA from this patient by dot-blot demonstrates a heterozygous substitution of arginine by histidine at position 47.