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1.
Front Nutr ; 11: 1415737, 2024.
Article in English | MEDLINE | ID: mdl-38919390

ABSTRACT

Mounting evidence indicates that blueberry consumption is associated with a variety of health benefits. It has been suggested that regular consumption of blueberries can support and/or protect against cardiovascular disease and function, pre-diabetes and type 2 diabetes, and brain and cognitive function in individuals with health conditions and age-related decline. Further, mechanistic investigations highlight the role of blueberry anthocyanins in mediating these health benefits, in part through interactions with gut microbiota. Also, nutritional interventions with blueberries have demonstrated the ability to improve recovery following exercise-induced muscle damage, attributable to anti-inflammatory effects. Despite these advancements in blueberry health research, research gaps persist which affects the generalizability of findings from clinical trials. To evaluate the current state of knowledge and research gaps, a blueberry health roundtable with scientific experts convened in Washington, DC (December 6-7, 2022). Discussions centered around five research domains: cardiovascular health, pre-diabetes and diabetes, brain health and cognitive function, gut health, and exercise recovery. This article synthesizes the outcomes of a blueberry research roundtable discussion among researchers in these domains, offering insights into the health benefits of blueberries and delineating research gaps and future research directions.

2.
Birth ; 2024 Jun 17.
Article in English | MEDLINE | ID: mdl-38887141

ABSTRACT

INTRODUCTION: Centering affected individuals and forming equitable institutional-community partnerships are necessary to meaningfully transform care delivery systems. We describe our use of the PRECEDE-PROCEED framework to design, plan, and implement a novel care delivery system to address perinatal inequities in San Francisco. METHODS: Community engagement (PRECEDE phases 1-2) informed the "Pregnancy Village" prototype, which would unite key organizations to deliver valuable services alongside one another, as a recurring "one-stop-shop" community-based event, delivered in an uplifting, celebratory, and healing environment. Semi-structured interviews with key partners identified participation facilitators and barriers (PRECEDE phases 3-4) and findings informed our implementation roadmap. We measured feasibility through the number of events successfully produced and attended, and organizational engagement through meeting attendance and surveys. RESULTS: The goals of Pregnancy Village resonated with key partners. Most organizations identified resource constraints and other participation barriers; all committed to the requested 12-month pilot. During its first year, 10 pilot events were held with consistent organizational participation and high provider engagement. CONCLUSION: Through deep engagement and equitable partnerships between community and institutional stakeholders, novel systems of care delivery can be implemented to better meet comprehensive community needs.

3.
Bioresour Technol ; 399: 130578, 2024 May.
Article in English | MEDLINE | ID: mdl-38479627

ABSTRACT

This life cycle assessment (LCA) study analyzed the environmental consequences of integrating microalgae-based wastewater treatment into a shrimp farm with recirculating aquaculture systems (RAS). Microalgae treatment produced <10 % of the system's freshwater eutrophication potential (FEP), marine eutrophication potential (MEP) and global warming potential, which was dominantly contributed by electricity use. Microalgae treatment performed comparably to activated sludge treatment for FEP reduction, and was more effective in remediating marine eutrophication. Replacing coal in electricity mix, particularly with renewables, reduced the system's impacts by up to 90-99 %. Performing the LCA based on system expansion generally obtained higher impacts compared to allocation. Utilizing algal biomass for biogas production reduced the MEP; however, production of feed ingredient and biodiesel were not environmentally beneficial. This study proved the use of microalgae for aquaculture wastewater treatment to be environmentally feasible, the results can guide more sustainable RAS operations and design of full-scale microalgae treatment.


Subject(s)
Microalgae , Water Purification , Animals , Wastewater , Feasibility Studies , Aquaculture/methods , Water Purification/methods , Crustacea , Biofuels , Biomass , Life Cycle Stages
4.
Sci Rep ; 14(1): 4936, 2024 03 12.
Article in English | MEDLINE | ID: mdl-38472289

ABSTRACT

Many countries with tropical reef systems face hard choices preserving coral reefs in the face of climate change on limited budgets. One approach to maximising regional reef resilience is targeting management efforts and resources at reefs that export large numbers of larvae to other reefs. However, this requires reef connectivity to be quantified. To map coral connectivity in the Seychelles reef system we carried out a population genomic study of the Porites lutea species complex using 241 sequenced colonies from multiple islands. To identify oceanographic drivers of this connectivity and quantify variability, we further used a 2 km resolution regional ocean simulation coupled with a larval dispersal model to predict the flow of coral larvae between reef sites. Patterns of admixture and gene flow are broadly supported by model predictions, but the realised connectivity is greater than that predicted from model simulations. Both methods detected a biogeographic dispersal barrier between the Inner and Outer Islands of Seychelles. However, this barrier is permeable and substantial larval transport is possible across Seychelles, particularly for one of two putative species found in our genomic study. The broad agreement between predicted connectivity and observed genetic patterns supports the use of such larval dispersal simulations in reef system management in Seychelles and the wider region.


Subject(s)
Anthozoa , Coral Reefs , Animals , Seychelles , Anthozoa/genetics , Genetics, Population , Larva
5.
Article in English | MEDLINE | ID: mdl-38546726

ABSTRACT

DISCLAIMER: In an effort to expedite the publication of articles, AJHP is posting manuscripts online as soon as possible after acceptance. Accepted manuscripts have been peer-reviewed and copyedited, but are posted online before technical formatting and author proofing. These manuscripts are not the final version of record and will be replaced with the final article (formatted per AJHP style and proofed by the authors) at a later time. PURPOSE: We describe the implementation and ongoing maintenance of CYP2C19 and CYP2D6 focused pharmacogenetic (PGx) testing to guide antidepressant and antianxiety medication prescriptions in a large rural, nonprofit health system. SUMMARY: Depression and anxiety are common psychiatric conditions. Sanford Health implemented PGx testing for metabolism of cytochrome P450 (CYP) isozymes 2C19 and 2D6 in 2014 to inform prescribing for multiple medications, including antidepressant and antianxiety therapies. As guidelines, genotype to phenotype translation, panel offerings, and other resources are updated, we adapt our approach. We make educational and informational materials available to providers and patients. Pharmacogenomic clinical pharmacists review PGx results with discrete values and provide guidance documentation in the electronic medical record. A robust clinical decision support system is in place to provide interruptive alerts, noninterruptive alerts, and genomic indicators. A referral-based interdisciplinary clinic is also available to provide in-depth education to patients regarding PGx results and implications. Additionally, partnering with our health plan has expanded access to PGx testing for patients with anxiety or depression. CONCLUSION: The implementation and maintenance of Sanford Health's PGx program to guide antidepressant and antianxiety medication use continues to evolve and requires a multipronged approach relying on both human and informatics-based resources.

6.
J Environ Manage ; 353: 120208, 2024 Feb 27.
Article in English | MEDLINE | ID: mdl-38301481

ABSTRACT

Aquaponics is an integrated food production system that intensively produces a diverse array of seafood and specialty crops in one closed-loop system, which is a potential solution to global challenges of food security. While current aquaponics systems are commonly operated with freshwater, marine aquaponics is an emerging opportunity to grow saltwater animals and plants. Although marine aquaponics can reduce the dependence on freshwater for food production, its environmental sustainability has not been systematically studied. This paper presents the first life cycle assessment (LCA) on a marine aquaponic production system growing shrimp and three halophytes. The system assessed covered from shrimp larvae nursery to grow-out. The effects of salinity, carbon/nitrogen (C/N) ratio and shrimp-to-plant stocking density ratio of aquaponics on its midpoint and endpoint environmental impacts were evaluated using a functional unit based on the economic value of the four products. Electricity use for aquaponic operation was the environmental hotspot, contributing ∼90 % to all the midpoint impacts. The system produced higher environmental impacts when operated at higher salinity, but lower C/N ratio and stocking density. Replacing fossil fuel with wind power for electricity generation can decrease the environmental impacts by 95-99 %. Variation in the shrimp price can change the impacts by up to 62 %. This study provides a useful tool to help marine aquaponic farmers improve their production from an environmental perspective, and can serve as groundwork for further assessing more marine aquaponic systems with different animal-plant combinations.


Subject(s)
Aquaculture , Crops, Agricultural , Animals , Hydroponics , Nitrogen , Seafood , Life Cycle Stages
8.
Midwifery ; 130: 103915, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38184973

ABSTRACT

OBJECTIVE: Previous research has shown that the COVID-19 pandemic significantly increased anxiety among pregnant women, and at the same time, COVID-19 has disproportionately affected communities of color in the United States. We sought to understand how self-identied Black pregnant women in the United States were affected in the early days of the COVID-19 pandemic. DESIGN: Cross-sectional, online survey distributed via social media SETTING: Online PARTICIPANTS: Non-probability, convenience sample of self-identified Black pregnant women in the United States between April 3 and 24, 2020 who responded to an online inquiry seeking women who were pregnant at the outset of the COVID-19 pandemic. MEASUREMENTS AND FINDINGS: An anonymous, self-administered, online survey of pregnant women was conducted, including both quantitative assessment of demographics, COVID-related anxiety, and pregnancy-related anxiety as well as open-ended prompts for qualitative assessment of the impact of COVID on prenatal care, birth plans, anxiety and overall experience of pregnancy. Quantitative data were analyzed using Stata 15.0, qualitative data were thematically analyzed using NVivo12.1. Results were compared using joint display methodology. Of 87 self-identified Black or African-American women who responded, the most common concerns related to fear of getting infected with COVID (89.7 %, N = 78) and concerns related to loss of job/income (67.8 %, N = 59). More than half (55.2 %, N = 48) reported either themselves or their family members working in essential services. Findings indicate that uncertainty, lack of support, perceived quality of care, and heightened anxiety worked together to define Black women's experiences of pregnancy in the early days of the COVID-19 pandemic in the U.S. While quantitative data did not explicitly capture reports of discrimination as impacting perceived quality of care, the qualitative data suggest a link between fears of discrimination, the need for self-advocacy, and heightened anxiety. KEY CONCLUSIONS: Despite being a relatively well-educated sample of Black women from around the United States, many respondents spoke of the fears of discrimination, the need for self-advocacy, and heightened anxiety, reinforcing that discrimination and fear of discrimation for Black women in healthcare settings are pervasive, regardless of a woman's level of education or other socioeconomic status indicators. IMPLICATIONS FOR PRACTICE: These findings suggest that in times of uncertainty, such as the early days of the COVID-19 pandemic, it is more important than ever to provide thoughtful, supportive care to pregnant women of color who are primed for negative experiences in the healthcare settting.


Subject(s)
COVID-19 , Pregnant Women , Female , Pregnancy , Humans , United States/epidemiology , COVID-19/epidemiology , Cross-Sectional Studies , Pandemics , Prenatal Care/methods , Anxiety/epidemiology , Anxiety/etiology
9.
J Thorac Cardiovasc Surg ; 167(3): 1077-1087.e13, 2024 Mar.
Article in English | MEDLINE | ID: mdl-36990918

ABSTRACT

OBJECTIVE: Assessing heart transplant program quality using short-term survival is insufficient. We define and validate the composite metric textbook outcome and examine its association with overall survival. METHODS: We identified all primary, isolated adult heart transplants in the United Network for Organ Sharing/Organ Procurement and Transplantation Network Standard Transplant Analysis and Research files from May 1, 2005, to December 31, 2017. Textbook outcome was defined as length of stay 30 days or less; ejection fraction greater than 50% during 1-year follow-up; functional status 80% to 100% at 1 year; freedom from acute rejection, dialysis, and stroke during the index hospitalization; and freedom from graft failure, dialysis, rejection, retransplantation, and mortality during the first year post-transplant. Univariate and multivariate analyses were performed. Factors independently associated with textbook outcome were used to create a predictive nomogram. Conditional survival at 1 year was measured. RESULTS: A total of 24,620 patients were identified with 11,169 (45.4%, 95% confidence interval, 44.7-46.0) experiencing textbook outcome. Patients with textbook outcome were more likely free from preoperative mechanical support (odds ratio, 3.504, 95% confidence interval, 2.766 to 4.439, P < .001), free from preoperative dialysis (odds ratio, 2.295, 95% confidence interval, 1.868-2.819, P < .001), to be not hospitalized (odds ratio, 1.264, 95% confidence interval, 1.183-1.349, P < .001), to be nondiabetic (odds ratio, 1.187, 95% confidence interval, 1.113-1.266, P < .001), and to be nonsmokers (odds ratio, 1.160, 95% confidence interval,1.097-1.228, P < .001). Patients with textbook outcome have improved long-term survival relative to patients without textbook outcome who survive at least 1 year (hazard ratio for death, 0.547, 95% confidence interval, 0.504-0.593, P < .001). CONCLUSIONS: Textbook outcome is an alternative means of examining heart transplant outcomes and is associated with long-term survival. The use of textbook outcome as an adjunctive metric provides a holistic view of patient and center outcomes.


Subject(s)
Heart Transplantation , Renal Dialysis , Adult , Humans , Treatment Outcome , Heart Transplantation/adverse effects , Proportional Hazards Models , Multivariate Analysis , Graft Survival , Retrospective Studies
10.
Infect Med (Beijing) ; 2(1): 31-35, 2023 Mar.
Article in English | MEDLINE | ID: mdl-38076404

ABSTRACT

Background: Studies have demonstrated improved clinical outcomes with extended infusion (EI) piperacillin/tazobactam (TZP) compared to standard infusion (SI). However, there is less evidence on its benefits in noncritically-ill patients. Hospital-wide EI TZP was implemented at our site on February 21, 2012. Our objectives were to compare clinical, safety and economic outcomes between EI and SI TZP. Methods: A retrospective cohort study of all adult patients who received EI TZP (3.375 g IV q8h infused over 4 hours and SI TZP for ≥ 48 hours during 3 years pre-and postimplementation was conducted. The primary study outcome was 14-day mortality while secondary outcomes included length of hospital stay (LOS), nursing plus pharmacy cost, occurrence of Clostridioides difficile infection, readmission within 30 days and change in Pseudomonas aeruginosa minimum inhibitory concentration (MIC) distribution for TZP. The primary outcome and binary secondary outcomes were analyzed using a logistic regression model. LOS was examined using time to event analysis. Cost was examined using linear regression modelling. Results: Overall, 2034 patients received EI TZP and 1364 patients received SI TZP. EI TZP was associated with lower odds of mortality (OR 0.76, 95% CI 0.63-0.91), lower odds of C. difficile infection (OR 0.59, 95% CI 0.41-0.84) and 8% lower cost (estimate 0.92, 95% CI 0.87-0.98) compared to SI TZP. Conclusions: Hospital-wide implementation of EI TZP was associated with lower odds of 14-day mortality and incidence of C. difficile infection with cost savings at our institution.

11.
Open Forum Infect Dis ; 10(10): ofad485, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37869403

ABSTRACT

Background: To assist clinicians with identifying children at risk of severe outcomes, we assessed the association between laboratory findings and severe outcomes among severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-infected children and determined if SARS-CoV-2 test result status modified the associations. Methods: We conducted a cross-sectional analysis of participants tested for SARS-CoV-2 infection in 41 pediatric emergency departments in 10 countries. Participants were hospitalized, had laboratory testing performed, and completed 14-day follow-up. The primary objective was to assess the associations between laboratory findings and severe outcomes. The secondary objective was to determine if the SARS-CoV-2 test result modified the associations. Results: We included 1817 participants; 522 (28.7%) SARS-CoV-2 test-positive and 1295 (71.3%) test-negative. Seventy-five (14.4%) test-positive and 174 (13.4%) test-negative children experienced severe outcomes. In regression analysis, we found that among SARS-CoV-2-positive children, procalcitonin ≥0.5 ng/mL (adjusted odds ratio [aOR], 9.14; 95% CI, 2.90-28.80), ferritin >500 ng/mL (aOR, 7.95; 95% CI, 1.89-33.44), D-dimer ≥1500 ng/mL (aOR, 4.57; 95% CI, 1.12-18.68), serum glucose ≥120 mg/dL (aOR, 2.01; 95% CI, 1.06-3.81), lymphocyte count <1.0 × 109/L (aOR, 3.21; 95% CI, 1.34-7.69), and platelet count <150 × 109/L (aOR, 2.82; 95% CI, 1.31-6.07) were associated with severe outcomes. Evaluation of the interaction term revealed that a positive SARS-CoV-2 result increased the associations with severe outcomes for elevated procalcitonin, C-reactive protein (CRP), D-dimer, and for reduced lymphocyte and platelet counts. Conclusions: Specific laboratory parameters are associated with severe outcomes in SARS-CoV-2-infected children, and elevated serum procalcitonin, CRP, and D-dimer and low absolute lymphocyte and platelet counts were more strongly associated with severe outcomes in children testing positive compared with those testing negative.

12.
J Am Assoc Lab Anim Sci ; 62(6): 487-493, 2023 Nov 11.
Article in English | MEDLINE | ID: mdl-37802606

ABSTRACT

Training personnel to work with animals presents a variety of challenges, both logistically and with regard to animal welfare. These issues make training an ideal opportunity to evaluate practices and to implement the 3R principles (refinement, replacement, and reduction). Cardiac blood collection from mice is a procedure that can compromise the 3Rs by requiring repeated practice and animal euthanasia. The development of a non-animal training model would promote the 3R principles. Our goals for the development of a new training model for cardiac blood collection from mice were to reduce the number of mice needed to achieve competency, improve our culture of care, and refine the training approach by improving competency. The training model was developed using commonly available materials. The total cost of the model was less than $15 USD per model. Two training curricula were conducted concurrently over a 5-mo period: 1) a curriculum in which trainees used the model before progressing to live mice and 2) the traditional curriculum, which used euthanized mice throughout. The measured variables included the total number of mice used, proportions of trainees who reached competency, the time needed to reach competency, method comprehension, quality of skill performance, trainer and trainee feedback, and training costs. The alternative group used at least 10 fewer mice per technician as compared with the traditionally trained group. The alternative group had a higher competency rate, with 82% (9 of 11 trainees) reaching competency compared with 60% (3 of 5 trainees) in the traditional group. Skill comprehension and quality were superior in the alternative group, as evidenced by fewer gross lesions at necropsy. Overall, personnel in the alternative group provided positive feedback with regard to the use of fewer mice, acquisition of both skill and confidence, and benefits for compassion fatigue. The use of this model is now our standard approach for training personnel in cardiac blood collection in mice. Our results demonstrate that the use of models in training curricula can enhance skill development and reduce the use of mice.


Subject(s)
Animal Welfare , Curriculum , Animals , Mice , Clinical Competence , Euthanasia, Animal
13.
Nat Methods ; 20(8): 1174-1178, 2023 08.
Article in English | MEDLINE | ID: mdl-37468619

ABSTRACT

Multiplexed antibody-based imaging enables the detailed characterization of molecular and cellular organization in tissues. Advances in the field now allow high-parameter data collection (>60 targets); however, considerable expertise and capital are needed to construct the antibody panels employed by these methods. Organ mapping antibody panels are community-validated resources that save time and money, increase reproducibility, accelerate discovery and support the construction of a Human Reference Atlas.


Subject(s)
Antibodies , Community Resources , Humans , Reproducibility of Results , Diagnostic Imaging
14.
Health Promot Pract ; : 15248399231184453, 2023 Jul 25.
Article in English | MEDLINE | ID: mdl-37491898

ABSTRACT

Racial and ethnic minority adolescents living in urban settings experience sleep disparities. Few interventions have been developed to address these disparities. Guided by principles of participatory design and inclusion, our team developed a novel intervention that combined sleep hygiene education with mind-body integrative health (MBIH) practices to improve sleep quality among adolescents in New York City. The goal of this article is to describe our iterative development and design process, the final product, and future directions. Our participatory approach incorporated information from formative work with adolescents having lived experience, practitioners, and syntheses of published literature. The final intervention-Sleeping Healthy, Living Healthy-consists of six, 40-minute group sessions and one 20-minute individual session designed for high school students. Each session has a set of learning objectives, combining instruction, group activities, and discussions on sleep hygiene and MBIH topics. Our manualized intervention includes handouts created by a graphic design team that served as a review and reminder for home practice. We describe intervention implementation to two unique cohorts and detail our methods used to fine-tune the intervention between cohorts. Our partnership with and insights from both adolescents and practitioners serve as a guide for researchers aiming to use participatory methods to develop interventions to decrease health disparities in specific populations.

15.
Article in English | MEDLINE | ID: mdl-37325681

ABSTRACT

Background: Prospective audit and feedback (PAF) is an established practice in critical care settings but not in surgical populations. We pilot-tested a structured face-to-face PAF program for our acute-care surgery (ACS) service. Methods: This was a mixed-methods study. For the quantitative analysis, the structured PAF period was from August 1, 2017, to April 30, 2019. The ad hoc PAF period was from May 1, 2019, to January 31, 2021. Interrupted time-series segmented negative binomial regression analysis was used to evaluate change in antimicrobial usage measured in days of therapy per 1,000 patient days for all systemic and targeted antimicrobials. Secondary outcomes included C. difficile infections, length of stay and readmission within 30 days. Each secondary outcome was analyzed using a logistic regression or negative binomial regression model. For the qualitative analyses, all ACS surgeons and trainees from November 23, 2015, to April 30, 2019, were invited to participate in an email-based anonymous survey developed using implementation science principles. Responses were measured using counts. Results: In total, 776 ACS patients were included in the structured PAF period and 783 patients were included in the in ad hoc PAF period. No significant changes in level or trend for antimicrobial usage were detected for all and targeted antimicrobials. Similarly, no significant differences were detected for secondary outcomes. The survey response rate was 25% (n = 10). Moreover, 50% agreed that PAF provided them with skills to use antimicrobials more judiciously, and 80% agreed that PAF improved the quality of antimicrobial treatment for their patients. Conclusion: Structured PAF showed clinical outcomes similar to ad hoc PAF. Structured PAF was well received and was perceived as beneficial by surgical staff.

16.
PEC Innov ; 2: 100130, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37214498

ABSTRACT

Objective: To inform the development of a combined sleep and mind-body integrative health (MBIH) intervention, we explored urban adolescents' sleep experiences and perceptions of MBIH techniques. Methods: We conducted eight focus groups with school-based health center patients in New York City, exploring sleep experiences; mindfulness, body awareness, tapping, acupressure, and self-hypnosis; and intervention delivery preferences. We recorded, transcribed, and analyzed the discussions applying methods from grounded theory. Results: Participants (n = 25) were ages 14-17, predominantly female (64%), Latino (60%), and Black (40%). Participants reported social, physical, and internal sleep barriers, but had limited success implementing sleep improvement strategies. Participants viewed MBIH techniques positively, noted audio-guided techniques' accessibility, and were intrigued by less-familiar techniques. Preferences varied around domains of intervention delivery. Conclusion: Results underscore the need for adolescent-informed interventions offering sleep improvement strategies. Participants' interest and willingness to engage in MBIH techniques present an opportunity for practitioners to develop and deliver sleep interventions incorporating MBIH components to urban adolescents. Varied intervention preferences highlight the need to be adaptable to adolescents' lived experiences, comfort levels, and learning styles. Innovation: This study elucidates the perspectives of underrepresented adolescents whose perspectives on MBIH have rarely been explored, an important first step in developing tailored interventions.

17.
Health Promot Pract ; : 15248399231166422, 2023 Apr 10.
Article in English | MEDLINE | ID: mdl-37038618

ABSTRACT

Numerous initiatives at the national, state, and local levels are focused on addressing the U.S. maternal health crisis. However, most efforts fail to center women's voices and personal perspectives about pregnancy experiences and complications. This article describes the Illinois Maternal Health Digital Storytelling Project conducted by the University of Illinois at Chicago, in partnership with StoryCenter, a storytelling nonprofit organization based in Berkeley, California. The project aimed to elevate voices (stories) to complement other sources of data on maternal outcomes. We relied on partners to help recruit storytellers with a self-identified perinatal-related challenge. We screened interested individuals using a trauma-informed approach and a social worker provided storytellers with support during the project. Two groups participated in this project, one in 2021 and another in 2022, culminating with 10 digital stories. Both instances were conducted virtually and included group and individual skills-based sessions where storytellers learned to create and edit their digital stories. The storytellers own their digital stories and provided consent to include them in ongoing dissemination efforts. In September 2021, a webpage was launched to house the stories, and this resource is being shared widely. Evaluation efforts of the webpage are ongoing to understand how these digital stories are being used to inform maternal health efforts. Digital stories add richness to ongoing maternal health prevention work and may serve as a powerful tool to elicit understanding among providers, practitioners, and constituents.

18.
Membranes (Basel) ; 13(4)2023 Apr 10.
Article in English | MEDLINE | ID: mdl-37103851

ABSTRACT

Membrane filtration is a key technology in dairy processing for the separation of dairy liquids to clarify, concentrate, and fractionate a variety of dairy products. Ultrafiltration (UF) is widely applied for whey separation, protein concentration and standardization, and lactose-free milk production, though its performance can be hindered by membrane fouling. As an automated cleaning process commonly used in the food and beverage industries, cleaning in place (CIP) uses large amounts of water, chemicals, and energy, resulting in significant environmental impacts. This study introduced micron-scale air-filled bubbles (microbubbles; MBs) with mean diameters smaller than 5 µm into cleaning liquids to clean a pilot-scale UF system. During the UF of model milk for concentration, cake formation was identified as the dominant membrane fouling mechanism. The MB-assisted CIP process was conducted at two bubble number densities (2021 and 10,569 bubbles per mL of cleaning liquid) and two flow rates (130 and 190 L/min). For all the cleaning conditions tested, MB addition largely increased the membrane flux recovery by 31-72%; however, the effects of bubble density and flow rate were insignificant. Alkaline wash was found to be the main step in removing proteinaceous foulant from the UF membrane, though MBs did not show a significant effect on the removal due to the operational uncertainty of the pilot-scale system. The environmental benefits of MB incorporation were quantified by a comparative life cycle assessment and the results indicated that MB-assisted CIP had up to 37% lower environmental impact than control CIP. This is the first study incorporating MBs into a full CIP cycle at the pilot scale and proving their effectiveness in enhancing membrane cleaning. This novel CIP process can help reduce water and energy use in dairy processing and improve the environmental sustainability of the dairy industry.

19.
J Youth Adolesc ; 52(8): 1566-1581, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37067642

ABSTRACT

Sexual minority adolescents are more likely to have obesity compared to their heterosexual peers, but little is known about potential contributors to this disparity that lie outside of individual-level health behaviors, such as diet and exercise. One possible contributor is school violence victimization, a factor associated with overweight/obesity in adolescence. Another possible contributor is school climate, which is associated with feelings of safety and connectedness that can lower the likelihood of school violence victimization. Moreover, even less is known about relationships among all these factors among sexual minority adolescents. This gap in the literature was addressed by analyzing CDC's district-level data from the Youth Risk Behavior Survey and School Health Profiles (N = 60,625; 50.9% female, Mage = 16 years, 84.7% heterosexual, 15.3% sexual minority). Using multilevel mixed effects logistic regression models and controlling for covariates, it was found that among females and males, those with 2+ counts of last 12-month school violence victimization had higher odds of obesity than those with no school violence victimization (AOR = 1.33; AOR = 1.24). Furthermore, females and males in more positive LGBTQ school climates had lower odds of obesity than those in less positive school climates (AOR = 0.84; AOR = 0.85). There were no sexual identity differences in these models. Findings support the careful consideration of school violence victimization and LGBTQ school climate in future obesity prevention initiatives.


Subject(s)
Crime Victims , Pediatric Obesity , Sexual and Gender Minorities , Male , Humans , Adolescent , Female , Violence , Risk Factors
20.
Science ; 380(6641): eabq2835, 2023 04 14.
Article in English | MEDLINE | ID: mdl-37053310

ABSTRACT

Living hominoids are distinguished by upright torsos and versatile locomotion. It is hypothesized that these features evolved for feeding on fruit from terminal branches in forests. To investigate the evolutionary context of hominoid adaptive origins, we analyzed multiple paleoenvironmental proxies in conjunction with hominoid fossils from the Moroto II site in Uganda. The data indicate seasonally dry woodlands with the earliest evidence of abundant C4 grasses in Africa based on a confirmed age of 21 million years ago (Ma). We demonstrate that the leaf-eating hominoid Morotopithecus consumed water-stressed vegetation, and postcrania from the site indicate ape-like locomotor adaptations. These findings suggest that the origin of hominoid locomotor versatility is associated with foraging on leaves in heterogeneous, open woodlands rather than forests.


Subject(s)
Adaptation, Physiological , Biological Evolution , Hominidae , Locomotion , Animals , Fossils , Hominidae/physiology , Uganda
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