6,044 research outputs found
Long-Term Effects of Land Application of Domestic Wastwater: Tooele, Utah, Slow-Rate Site, Volume 1: Field Investigation
Application of wastewater to the land has been designated a viable alternative for wastewater treatment by the Water Pollution Act Amendments of 1972 (PL 92-500). However, very little information is available concerning the long-term effects of applying wastewater to the land. The general objective of this study was to determine the long-term effects of employing secondary treated municipal wastewater as irrigation water. The study compared the quality of soils, crops, groundwater, and applied water to a site receiving normal irrigation water (control site) to a site (treated site) which had utilized seondary treated municipal effluent for irrigation water during a 20-year period. Similar management practices were employed at both sites
Evaluation of the Long Term Effects of Irrigation with Wastewater
Introduction: Background: The application of municipal wastewater to the land or using the soil mantle as a wastewater treatment system has been practiced for many years. The history of land application dates back to ancient Athens. Sewage farming or the transportation of wastewater to rural areas for irrigation and disposal was practiced in Eurpose as early as 1559. The practice became fairly widespread in England, France, Germany, Poland, Austria, and the United States during the late 1800\u27s
Inherent Rheology of a Granular Fluid in Uniform Shear Flow
In contrast to normal fluids, a granular fluid under shear supports a steady
state with uniform temperature and density since the collisional cooling can
compensate locally for viscous heating. It is shown that the hydrodynamic
description of this steady state is inherently non-Newtonian. As a consequence,
the Newtonian shear viscosity cannot be determined from experiments or
simulation of uniform shear flow. For a given degree of inelasticity, the
complete nonlinear dependence of the shear viscosity on the shear rate requires
the analysis of the unsteady hydrodynamic behavior. The relationship to the
Chapman-Enskog method to derive hydrodynamics is clarified using an approximate
Grad's solution of the Boltzmann kinetic equationComment: 10 pages, 4 figures; substantially enlarged version; to be published
in PR
The Global Health and Care Worker Compact: Evidence Base and Policy Considerations
Background During the COVID-19 pandemic, and recognising the sacrifice of health and care workers alongside discrimination, violence, poor working conditions and other violations of their rights, health and safety, in 2021 the World Health Assembly requested WHO to develop a global health and care worker compact, building on existing normative documentation, to provide guidance to ‘protect health and care workers and safeguard their rights’.
Methods A review of existing international law and other normative documents was conducted. We manually searched five main sets of international instruments: (1) International Labour Organization conventions and recommendations; (2) WHO documents; (3) United Nations (UN) human rights treaties and related documents; (4) UN Security Council and General Assembly resolutions and (5) the Geneva Conventions and Additional Protocols. We included only legal or other normative documents with a global or regional focus directly addressing or relevant to health and care workers or workers overall.
Results More than 70 documents met our search criteria. Collectively, they fell into four domains, within which we identified 10 distinct areas: (1) preventing harm, encompassing (A) occupational hazards, (B) violence and harassment and (C) attacks in situations of fragility, conflict and violence; (2) inclusivity, encompassing (A) non-discrimination and equality; (3) providing support, encompassing (A) fair and equitable remuneration, (B) social protection and (C) enabling work environments and (4) safeguarding rights, encompassing (A) freedom of association and collective bargaining and (B) whistle-blower protections and freedom from retaliation.
Discussion A robust legal and policy framework exists for supporting health and care workers and safeguarding their rights. Specific human rights, the right to health overall, and other binding and non-binding legal documents provide firm grounding for the compact.
However, these existing commitments are not being fully met. Implementing the compact will require more effective governance mechanisms and new policies, in partnership with health and care workers themselves
A core outcome set for localised prostate cancer effectiveness trials : protocol for a systematic review of the literature and stakeholder involvement through interviews and a Delphi survey
Acknowledgements We would like to thank Professor Craig Ramsay, Professor Luke Vale, and Professor Vikki Entwistle for their comments on earlier drafts of the protocol. This study is funded by the Cancer Research Aberdeen and North East Scotland (CRANES) charity. Paula Williamson would like to acknowledge funding from the European Union Seventh Framework Programme (FP7/2007-2013, FP7/2007-2011) under grant agreement number 305081 for the COMET initiative, which provided support for this work.Peer reviewedPublisher PD
Quality of Life and Social and Psychological Outcomes in Adulthood Following Allogeneic HSCT in Childhood for Inborn Errors of Immunity
BACKGROUND: Hematopoietic stem cell transplant (HSCT) is well established as a corrective treatment for many inborn errors of immunity (IEIs) presenting in childhood. Due to improved techniques, more transplants are undertaken and patients are living longer. However, long-term complications can significantly affect future health and quality of life. Previous research has focused on short-term medical outcomes and little is known about health or psychosocial outcomes in adulthood. OBJECTIVE: This project aimed to ascertain the long-term social and psychological outcomes for adults who underwent HSCT for IEI during childhood. METHODS: Adult patients, who had all undergone HSCT for IEI during childhood at two specialist immunology services at least 5 years previously, were invited to participate in the study. Questionnaires and practical tasks assessed their current functioning and circumstances. Information was also gathered from medical notes. Data was compared with population norms and a control group of participant-nominated siblings or friends. RESULTS: Eighty-three patients and 46 matched controls participated in the study. Patients reported significantly better physical health-related quality of life than the general population norm, but significantly worse than matched controls. Patient's self-reported physical health status and the perceived impact of their physical health on everyday life were worse than matched controls and patients reported higher levels of anxiety and lower mood than the general population. For those where their IEI diagnosis was not associated with a learning disability, cognitive function was generally within the normal range. CONCLUSIONS: Patients who have had a HSCT in childhood report mixed psychosocial outcomes in adulthood. More research is needed to establish screening protocols and targeted interventions to maximize holistic outcomes. CLINICAL IMPLICATIONS: Screening for holistic needs and common mental health difficulties should be part of routine follow-up. Information should be provided to patients and families in order to support decision-making regarding progression to transplant and the early identification of any difficulties
Involvement of claudin-7 in HIV infection of CD4(-) cells
BACKGROUND: Human immunodeficiency virus (HIV) infection of CD4(-) cells has been demonstrated, and this may be an important mechanism for HIV transmission. RESULTS: We demonstrated that a membrane protein, claudin-7 (CLDN-7), is involved in HIV infection of CD4(-) cells. A significant increase in HIV susceptibility (2- to 100-fold) was demonstrated when CLDN-7 was transfected into a CD4(-) cell line, 293T. In addition, antibodies against CLDN-7 significantly decreased HIV infection of CD4(-) cells. Furthermore, HIV virions expressing CLDN-7 on their envelopes had a much higher infectivity for 293T CD4(-) cells than the parental HIV with no CLDN-7. RT-PCR results demonstrated that CLDN-7 is expressed in both macrophages and stimulated peripheral blood leukocytes, suggesting that most HIV virions generated in infected individuals have CLDN-7 on their envelopes. We also found that CLDN-7 is highly expressed in urogenital and gastrointestinal tissues. CONCLUSION: Together these results suggest that CLDN-7 may play an important role in HIV infection of CD4(-) cells
Meaning behind measurement : self-comparisons affect responses to health related quality of life questionnaires
Purpose The subjective nature of quality of life is particularly pertinent to the domain of health-related quality of
life (HRQOL) research. The extent to which participants’ responses are affected by subjective information and personal reference frames is unknown. This study investigated how an elderly population living with a chronic metabolic bone disorder evaluated self-reported quality of life. Methods Participants (n = 1,331) in a multi-centre randomised controlled trial for the treatment of Paget’s disease completed annual HRQOL questionnaires, including the SF-36, EQ-5D and HAQ. Supplementary questions were added to reveal implicit reference frames used when making HRQOL evaluations. Twenty-one participants (11 male, 10 female, aged 59–91 years) were interviewed retrospectively about their responses to the supplementary questions, using cognitive interviewing techniques and semi-structured topic guides. Results The interviews revealed that participants used complex and interconnected reference frames to promote response shift when making quality of life evaluations. The choice of reference frame often reflected external factors unrelated to individual health. Many participants also stated that they were unclear whether to report general or disease-related HRQOL. Conclusions It is important, especially in clinical trials, to provide instructions clarifying whether ‘quality of life’ refers to disease-related HRQOL. Information on selfcomparison reference frames is necessary for the interpretation of responses to questions about HRQOL.The Chief Scientist Office of the Scottish Government Health Directorates,
The PRISM funding bodies (the Arthritis Research Campaign, the National Association for the Relief of Paget’s disease and the Alliance for Better Bone Health)Peer reviewedAuthor final versio
Phylotastic! Making Tree-of-Life Knowledge Accessible, Reusable and Convenient
Scientists rarely reuse expert knowledge of phylogeny, in spite of years of effort to assemble a great "Tree of Life" (ToL). A notable exception involves the use of Phylomatic, which provides tools to generate custom phylogenies from a large, pre-computed, expert phylogeny of plant taxa. This suggests great potential for a more generalized system that, starting with a query consisting of a list of any known species, would rectify non-standard names, identify expert phylogenies containing the implicated taxa, prune away unneeded parts, and supply branch lengths and annotations, resulting in a custom phylogeny suited to the user's needs. Such a system could become a sustainable community resource if implemented as a distributed system of loosely coupled parts that interact through clearly defined interfaces. Results: With the aim of building such a "phylotastic" system, the NESCent Hackathons, Interoperability, Phylogenies (HIP) working group recruited 2 dozen scientist-programmers to a weeklong programming hackathon in June 2012. During the hackathon (and a three-month follow-up period), 5 teams produced designs, implementations, documentation, presentations, and tests including: (1) a generalized scheme for integrating components; (2) proof-of-concept pruners and controllers; (3) a meta-API for taxonomic name resolution services; (4) a system for storing, finding, and retrieving phylogenies using semantic web technologies for data exchange, storage, and querying; (5) an innovative new service, DateLife.org, which synthesizes pre-computed, time-calibrated phylogenies to assign ages to nodes; and (6) demonstration projects. These outcomes are accessible via a public code repository (GitHub.com), a website (www.phylotastic.org), and a server image. Conclusions: Approximately 9 person-months of effort (centered on a software development hackathon) resulted in the design and implementation of proof-of-concept software for 4 core phylotastic components, 3 controllers, and 3 end-user demonstration tools. While these products have substantial limitations, they suggest considerable potential for a distributed system that makes phylogenetic knowledge readily accessible in computable form. Widespread use of phylotastic systems will create an electronic marketplace for sharing phylogenetic knowledge that will spur innovation in other areas of the ToL enterprise, such as annotation of sources and methods and third-party methods of quality assessment.NESCent (the National Evolutionary Synthesis Center)NSF EF-0905606iPlant Collaborative (NSF) DBI-0735191Biodiversity Synthesis Center (BioSync) of the Encyclopedia of LifeComputer Science
Climate Smart Agriculture in the African Context
Agriculture remains vital to the economy of most African countries and its development
has significant implications for food security and poverty reduction in the region. Increase
in agricultural production over the past decades has mainly been due to land area expansion,
with very little change in production techniques and limited improvement in yields.
Currently one in four people remains malnourished in Africa. CSA integrates all three dimensions of sustainable development and is aimed at (1)
sustainably increasing agricultural productivity and incomes; (2) adapting and building
resilience to climate change from the farm to national levels; and (3) developing
opportunities to reduce greenhouse gas emissions from agriculture compared with past
trends. It is an approach to identify the most suitable strategies according to national and
local priorities and conditions to meet these three objectives. There is no such thing as an
agricultural practice that is climate smart per se. Whether or not a particular practice or
production system is climate smart depends upon the particular local climatic, biophysical,
socio-economic and development context, which determines how far a particular practice
or system can deliver on productivity increase, resilience and mitigation benefits. For Africa to reap the potential benefits CSA, concrete actions must be taken to: enhance
the evidence base to underpin strategic choices, promote and facilitate wider adoption by
farmers of appropriate technologies; develop institutional arrangements to support, apply
and scale-out CSA from the farm level to the agricultural landscape level; manage tradeoffs
in perspectives of farmers and policymakers; strengthen technical, analytical and
implementation capacities; ensure policy frameworks and public investments are
supportive of CSA; develop and implement effective risk-sharing schemes
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