8,314 research outputs found
Installation of insecticide-treated durable wall lining: evaluation of attachment materials and product durability under field conditions.
BACKGROUND: Insecticide-treated durable wall lining (DL) is a new method of vector control designed to supplement LLINs and overcome two inherent limitations of LLINs and IRS: nightly behavioural compliance and short residual activity, respectively. DL is a deltamethrin-treated polyethylene material, which when used to cover interior house walls, functions as long-lasting IRS. Because the DL concept anticipates minimal upkeep, a primary challenge is how to guarantee correct household installation and in situ longevity for several years. Field trials were undertaken on various wall surfaces in Ghana to identify a logistically feasible, durable and re-usable method for DL wall attachment and to pilot new methods for assessing DL durability. METHODS: Over fifty-five candidate attachment or fixing products, including mechanical fasteners, material anchors and adhesives, were evaluated for their ability to tolerate static loads (simulating long-term installation) and short-term heavy weights (imitating shock damage). Attachment products were also scored using qualitative logistical and feasibility criteria, including ease of preparation, grip of fixing to DL and possibility of re-use. RESULTS: The stress tests provided a standardised, reproducible and reliable system for assessing fixing effectiveness and DL durability, with 64% (14/22) of adhesives and 15% (2/13) of mechanical fasteners failing to meet the minimum requirements of attaching DL to mud walls for set time periods. For most fixings, less outward load (0.2-8.0 kg) was required to detach DL from the wall, compared to downward load (0.2-19.2 kg). Fixings were better able to grip DL onto concrete than clay surfaces. Using a plastic nail cap to increase DL attachment area greatly improved grip and outward load tolerance, more so than varying nail size, length or texture. CONCLUSIONS: Based on a series of systematic stress tests, optimized fixing products for polyethylene DL wall attachment were identified. In parallel, a detailed and adaptable method of DL household installation was developed for routine deployment in malaria endemic areas. These standardized stress tests will form the basis for comparative evaluations of new types of DL textile, which incorporate non-pyrethroid insecticides to control malaria transmitted by resistant mosquito populations
Food Tailoring bilberry powder functionality by processing: effects of preprocessing.
Berry powders are popular as ingredients in a range of food products, where they
naturally provide flavor, color, texture, polyphenols, fiber, and other nutrients. The
choices regarding processing techniques and conditions influence the quality attrib-
utes of berry powders. The aim of this study was to study the effects on bilberry
powder functionalities of applying different preprocessing techniques (purée mixing
and juice pressing vs. untreated whole berries) prior to hot air drying and milling.
Drying of press cake reduced the drying time by 72% and increased the total appar-
ent phenolic content of the final powder by 44%, as compared to the powder of dried
whole berries. The press cake powder showed an easier flowing behavior than the
powders from whole berries and puréed berries. Dispersibility (in water and dairy
cream) was 60% higher for powders from whole berries and puréed berries, as com-
pared to press cake. The total phenolic content of the dispersed powders was highest
for whole berries and puréed berries. Bilberry powder functionality can be modu-
lated through the selection of an appropriate preprocessing technique before drying
and milling. This tailors the powder properties into food ingredients ready for differ-
ent applications, without the need for additives
Cognitive-behavioral therapy for anxiety in Parkinson's disease
Parkinson's disease (PD) is characterized by motor symptoms, but nonmotor symptoms also significantly impair daily functioning and reduce quality of life. Anxiety is prevalent and debilitating in PD, but remains understudied and undertreated. Much affective research in PD focuses on depression rather than anxiety, and as such, there are no evidence-based treatments for anxiety in this population. Cognitive-behavioral therapy (CBT) has shown promise for treating depression in PD and may be efficacious for anxiety. This exploratory study implemented a multiple-baseline single-case experimental design to evaluate the utility and feasibility of CBT for individuals with PD who also met criteria for a DSM-5 anxiety disorder ( n = 9). Participants were randomized to a 2-, 4-, or 6-week baseline phase, followed by 12 CBT sessions, and two post treatment assessments (immediately post treatment and 6-week follow-up). Multiple outcome measures of anxiety and depression were administered weekly during baseline and intervention. Weekly CBT sessions were conducted in-person ( n = 5) or via secure videoconferencing ( n = 4). At post treatment, seven of the nine participants showed significant reductions in anxiety and/or depression, with changes functionally related to treatment and most improvements maintained at 6-week follow-up. Effects of CBT on secondary outcomes varied across participants, with preliminary evidence for reduction in fear of falling. Adherence and retention were high, as were treatment satisfaction and acceptability. The findings of this pilot study provide preliminary evidence for the utility of CBT as a feasible treatment for anxiety and comorbid depressive symptoms in PD and highlight the potential of telehealth interventions for mood in this population.Accepted manuscrip
Structural Calculations for a Medical Clinic in the Dominican Republic with Mission TwentyFive35
Located in the northern region of the Dominican Republic, Rural Resilience is a clinic situated on a vocational campus in the rural town of Via Tapia. In collaboration with the Amoveo Group, Mission TwentyFive35 initiated the design and construction of this vocational campus to address the community’s limited access to healthcare and education, clean water, food, and the lack of vocational job training. Planned to be completed in several phases, this campus aims as a means to solve these shortcomings. This project provides the structural calculations and drawings for the clinic within Mission TwentyFive35’s campus. In coordination with the non profit humanitarian organization Journeyman International, an architecture student was paired with a construction management student and an architectural engineering student to design the building, which will be reviewed by an in-country engineer before construction may begin
Editorial: Nature’s Contributions to People: On the Relation Between Valuations and Actions
Editorial on the Research Topic.
Nature’s Contributions to People: On the Relation Between Valuations and Actions
Sponsor networks and business relations orchestrated by team sport clubs
Purpose This study investigates firms’ reasons and motives for becoming sponsors and how they benefit from this networking engagement by exploring sponsorship networks associated with two Danish team sport clubs – a Premier League football club and a second-division handball club. Design/methodology/approach Two online surveys were conducted with firms associated with the networks during the autumn and winter of 2013/14 (N=116). The questionnaire was theoretically anchored in existing sponsorship literature, business network research and social capital theory. Findings The results show that business logics were the dominating reasons for joining the network. A large proportion of the respondents reported having increased their number of business (32%) and social (26%) relations with other network members after joining the network. Furthermore, 37% of the respondents reported having made business agreements with companies external to the network via network contacts, which supports ideas of bridging social capital. More than half the respondents (59%) preferred doing business with network members rather than with non-members. Originality/value By investigating a local and regional sport-club context, the paper adds to our knowledge about sponsorship networks. It emphasizes the potential importance of team sport clubs for the business landscape, thus maintaining that sport clubs fulfill an important role for local communities beyond being mere entertainment industries
Simulation as a Disruptive Innovation in Advanced Practice Nursing Programs: A Report from a Qualitative Examination
Simulation as a pedagogy is used extensively to educate healthcare professionals in both academic and clinical arenas with the intent to improve the delivery of care and patient outcomes. Advanced practice nursing (APN) programs use simulation as a pedagogy even though APN accreditation and certification organizations prohibit substituting simulation hours for the minimum 500 clinical hours. The purpose of this qualitative study was to explore faculty perceptions of educating APN students using simulation. Focus groups were conducted with a convenience sample of APN simulation faculty. Disruptive innovation theory was used by the researchers to guide the data analysis. Themes emerging during analysis included: 1) extrinsic tension and pressure in the midst of chaos, 2) internal vulnerability, and 3) passion and tenacity to remain resilient. The study results provide clarity to understand integration of APN simulation in the current environment, and introduce the impact of simulation as a disruptive innovation
Prevalence of Inherited Hemoglobin Disorders and Relationships with Anemia and Micronutrient Status among Children in Yaoundé and Douala, Cameroon.
Information on the etiology of anemia is necessary to design effective anemia control programs. Our objective was to measure the prevalence of inherited hemoglobin disorders (IHD) in a representative sample of children in urban Cameroon, and examine the relationships between IHD and anemia. In a cluster survey of children 12-59 months of age (n = 291) in Yaoundé and Douala, we assessed hemoglobin (Hb), malaria infection, and plasma indicators of inflammation and micronutrient status. Hb S was detected by HPLC, and α⁺thalassemia (3.7 kb deletions) by PCR. Anemia (Hb < 110 g/L), inflammation, and malaria were present in 45%, 46%, and 8% of children. A total of 13.7% of children had HbAS, 1.6% had HbSS, and 30.6% and 3.1% had heterozygous and homozygous α⁺thalassemia. The prevalence of anemia was greater among HbAS compared to HbAA children (60.3 vs. 42.0%, p = 0.038), although mean Hb concentrations did not differ, p = 0.38). Hb and anemia prevalence did not differ among children with or without single gene deletion α⁺thalassemia. In multi-variable models, anemia was independently predicted by HbAS, HbSS, malaria, iron deficiency (ID; inflammation-adjusted ferritin <12 µg/L), higher C-reactive protein, lower plasma folate, and younger age. Elevated soluble transferrin receptor concentration (>8.3 mg/L) was associated with younger age, malaria, greater mean reticulocyte counts, inflammation, HbSS genotype, and ID. IHD are prevalent but contribute modestly to anemia among children in urban Cameroon
Mass stranding and unusual sightings of northern bottlenose whales (Hyperoodon ampullatus) in Skjálfandi Bay, Iceland
Poster.-- World Marine Mammal Conference, Barcelona, 9-12 December 2019Peer reviewe
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