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2.
Eval Program Plann ; 94: 102127, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35803067

RESUMO

Performance-based funding and calls for public-funded science to demonstrate societal impact are encouraging public research organisations to evaluate impact, the so-called impact agenda. This paper explores evaluation methods of four fully or partially public-funded agricultural research organisations and how they are building evaluative capacity to respond to the impact agenda. Drawing on cross-organisational comparison of the readiness of each organisation to implement evaluation, the implications for improving evaluative capacity building (ECB) are discussed. This study extends the current literature on ECB, as very little has focussed on research organisations in general, and particularly agricultural research. Driven by the impact agenda, the organisations are beginning to emphasise summative evaluation. Organisational leaders valuing the demonstration of impact and commitment to building evaluation capacity are important precursors to other aspects of organisational readiness to implement evaluation. However, organisational emphasis remains on using evaluation for accountability and to improve efficiency and allocation of funding. The organisations have yet to systematically embed evaluation processes and capabilities for learning at programme and organisation-levels. There is, therefore, an opportunity to develop organisation and programme-level evaluation processes that inform each other and the pathways to impact from science. To realise this opportunity, organisations could strengthen internal and external networks of evaluation practitioners and academics to bridge the gap between the theory and practice of monitoring and evaluation for learning (MEL) and to begin to reshape organisational culture by using evaluation methods that are grounded in co-production and integrated scientific and societal values.


Assuntos
Fortalecimento Institucional , Humanos , Irlanda , Nova Zelândia , Avaliação de Programas e Projetos de Saúde , Espanha , Uruguai
3.
Ecol Appl ; 31(5): e02319, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33665918

RESUMO

Nonnative plant pests cause billions of dollars in damages. It is critical to prevent or reduce these losses by intervening at various stages of the invasion process, including pathway risk management (to prevent pest arrival), surveillance and eradication (to counter establishment), and management of established pests (to limit damages). Quantifying benefits and costs of these interventions is important to justify and prioritize investments and to inform biosecurity policy. However, approaches for these estimations differ in (1) the assumed relationship between supply, demand, and prices, and (2) the ability to assess different types of direct and indirect costs at invasion stages, for a given arrival or establishment probability. Here we review economic approaches available to estimate benefits and costs of biosecurity interventions to inform the appropriate selection of approaches. In doing so, we complement previous studies and reviews on estimates of damages from invasive species by considering the influence of economic and methodological assumptions. Cost accounting is suitable for rapid decisions, specific impacts, and simple methodological assumptions but fails to account for feedbacks, such as market adjustments, and may overestimate long-term economic impacts. Partial equilibrium models consider changes in consumer and producer surplus due to pest impacts or interventions and can account for feedbacks in affected sectors but require specialized economic models, comprehensive data sets, and estimates of commodity supply and demand curves. More intensive computable general equilibrium models can account for feedbacks across entire economies, including capital and labor, and linkages among these. The two major considerations in choosing an approach are (1) the goals of the analysis (e.g., consideration of a single pest or intervention with a limited range of impacts vs. multiple interventions, pests or sectors), and (2) the resources available for analysis such as knowledge, budget and time.


Assuntos
Espécies Introduzidas , Modelos Econômicos , Análise Custo-Benefício , Probabilidade , Gestão de Riscos
4.
Environ Manage ; 65(3): 288-305, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32036400

RESUMO

Social learning is a process suited to developing understanding and concerted action to tackle complex resource dilemmas, such as freshwater management. Research has begun to recognise that in practice social learning encounters a variety of institutional challenges from the shared habits and routines of stakeholders (organised by rules, norms and strategies) that are embedded in organisational structures and norms of professional behaviour. These institutional habits and routines influence the degree of willingness to engage with stakeholders, and expectations of behaviours in social learning processes. Considering this, there has been a call to understand how institutions influence social learning and emergent outcomes. We addresses this by presenting a heuristic for implementing social learning cognisant of institutional context to answer three questions: (i) How institutional influences impact implementation of social learning design; (ii) how implementation of social learning design modifies institutions influencing social learning; and (iii) how these changes in design and institutions together shape social learning outcomes? To answer these questions a freshwater planning exercise was designed, implemented and evaluated as a social learning process with community groups in two New Zealand catchments. Incorporating participatory reflection enabled the project team to modify social learning design to manage institutional influences hindering progress toward outcomes. Findings emphasise that social learning is underpinned by participants' changing assumptions about what constitutes the institution of learning itself-from instruction to a dynamic, collective and emergent process. Reflecting on these assumptions also challenged participants' expectations about their own and others' behaviours and roles in freshwater planning.


Assuntos
Aprendizado Social , Participação da Comunidade , Água Doce , Humanos , Aprendizagem , Nova Zelândia
5.
J Sci Food Agric ; 100(14): 5083-5092, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30191570

RESUMO

The world needs to produce more food, more sustainably, on a planet with scarce resources and under changing climate. The advancement of technologies, computing power and analytics offers the possibility that 'digitalisation of agriculture' can provide new solutions to these complex challenges. The role of science is to evidence and support the design and use of digital technologies to realise these beneficial outcomes and avoid unintended consequences. This requires consideration of data governance design to enable the benefits of digital agriculture to be shared equitably and how digital agriculture could change agricultural business models; that is, farm structures, the value chain and stakeholder roles, networks and power relations, and governance. We argue that this requires transdisciplinary research (at pace), including explicit consideration of the aforementioned socio-ethical issues, data governance and business models, alongside addressing technical issues, as we now have to simultaneously deal with multiple interacting outcomes in complex technical, social, economic and governance systems. The exciting prospect is that digitalisation of science can enable this new, and more effective, way of working. The question then becomes: how can we effectively accelerate this shift to a new way of working in agricultural science? As well as identifying key research areas, we suggest organisational changes will be required: new research business models, agile project management; new skills and capabilities; and collaborations with new partners to develop 'technology ecosystems'. © 2018 The Authors. © 2018 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.


Assuntos
Agricultura/métodos , Tecnologia Digital , Abastecimento de Alimentos/economia , Agricultura/economia , Agricultura/instrumentação , Agricultura/tendências , Sistemas Computacionais , Tomada de Decisões , Tecnologia Digital/economia , Tecnologia Digital/instrumentação , Humanos
6.
Clin Infect Dis ; 66(9): 1400-1406, 2018 04 17.
Artigo em Inglês | MEDLINE | ID: mdl-29155976

RESUMO

Background: On 9 January 2015, in a rural town in Mozambique, >230 persons became sick and 75 died of an illness linked to drinking pombe, a traditional alcoholic beverage. Methods: An investigation was conducted to identify case patients and determine the cause of the outbreak. A case patient was defined as any resident of Chitima who developed any new or unexplained neurologic, gastrointestinal, or cardiovascular symptom from 9 January at 6:00 am through 12 January at 11:59 pm. We conducted medical record reviews, healthcare worker and community surveys, anthropologic and toxicologic investigations of local medicinal plants and commercial pesticides, and laboratory testing of the suspect and control pombe. Results: We identified 234 case patients; 75 (32%) died and 159 recovered. Overall, 61% of case patients were female (n = 142), and ages ranged from 1 to 87 years (median, 30 years). Signs and symptoms included abdominal pain, diarrhea, vomiting, and generalized malaise. Death was preceded by psychomotor agitation and abnormal posturing. The median interval from pombe consumption to symptom onset was 16 hours. Toxic levels of bongkrekic acid (BA) were detected in the suspect pombe but not the control pombe. Burkholderia gladioli pathovar cocovenenans, the bacteria that produces BA, was detected in the flour used to make the pombe. Conclusions: We report for the first time an outbreak of a highly lethal illness linked to BA, a deadly food-borne toxin in Africa. Given that no previous outbreaks have been recognized outside Asia, our investigation suggests that BA might be an unrecognized cause of toxic outbreaks globally.


Assuntos
Bebidas Alcoólicas/microbiologia , Ácido Bongcréquico/isolamento & purificação , Burkholderia gladioli/isolamento & purificação , Doenças Transmitidas por Alimentos/mortalidade , Incidentes com Feridos em Massa/mortalidade , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Surtos de Doenças , Feminino , Farinha/microbiologia , Doenças Transmitidas por Alimentos/microbiologia , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Moçambique/epidemiologia , População Rural , Adulto Jovem
7.
J Nucl Med Technol ; 45(1): 30-33, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-27834725

RESUMO

Gadolinium is toxic and to avoid its deposition in tissues, it must be chemically bonded with nonmetal ions to facilitate its excretion by the kidneys. High signal intensity in the dentate nucleus (DN) and globus pallidus (GP) on unenhanced T1-weighted MR images has been both morphologically and pathologically linked to gadolinium-based contrast agent (GBCA) retention in the brain. The purpose of this study was to determine whether repeated administrations of GBCA would affect the uptake of 18F-FDG in the DN and GP on PET/CT. Methods: Three hundred seventy-six patients who underwent both contrast-enhanced MR (CE MR) of the brain and PET/CT from January 2004 to October 2015 were identified. Patients with a history of brain irradiation or hepatic or renal disease were excluded. The SUVmax was measured in the DN and GP on the PET/CT scan in patients who had 3-6 successive CE MR brain studies. The SUVmax of the corresponding areas in the control group of patients who had not undergone previous CE MR and who had a normal, unenhanced MR finding of the brain was also measured. A Wilcoxon 2-sample test was used for statistical analysis. Results: Fifteen of 376 (4%) patients (mean age ± SD, 54 ± 18 y; 10 men and 5 women) were included in the subject group, and 15 patients (mean age ± SD, 36 ± 9 y; 11 men and 4 women) were included in the control group. The median DN SUVmax was significantly lower in the subject group than in the control group (5.4 vs. 6.4, respectively; P = 0.021). Similarly, the median GP SUVmax was significantly lower in the subject group than in the control group (8.8 vs. 12.1, respectively; P = 0.003). Conclusion: The median SUVmax in the DN and GP was 16% and 27% lower, respectively, in patients who received GBCAs than in those who had not received GBCAs, possibly related to gadolinium deposition in these areas.


Assuntos
Núcleos Cerebelares/efeitos dos fármacos , Núcleos Cerebelares/metabolismo , Fluordesoxiglucose F18/metabolismo , Gadolínio/farmacologia , Globo Pálido/efeitos dos fármacos , Globo Pálido/metabolismo , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Adulto , Transporte Biológico/efeitos dos fármacos , Núcleos Cerebelares/diagnóstico por imagem , Meios de Contraste/farmacologia , Feminino , Globo Pálido/diagnóstico por imagem , Humanos , Masculino , Projetos Piloto , Estudos Retrospectivos
8.
Forensic Sci Int ; 270: e5-e11, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27823840

RESUMO

In January 2015, 75 people died and 177 were hospitalized in the Mozambique village of Chitima after attending a funeral. The deaths were linked to the consumption of a traditional African beverage called pombe. Samples of the suspect pombe were subjected to myriad analyses and compared to a control sample. Ultimately, non-targeted liquid chromatography-mass spectrometry screening revealed the presence of the potent toxin bongkrekic acid, and its structural isomer, isobongkrekic acid. Quantitative analysis found potentially fatal levels of these toxins in the suspect pombe samples. Bongkrekic acid is known to be produced by the bacterium Burkholderia gladioli pv. cocovenenans. This bacterium could not be isolated from the suspect pombe, but bacteria identified as B. gladioli were isolated from corn flour, a starting ingredient in the production of pombe, obtained from the brewer's home. When the bacteria were co-plated with the fungus Rhizopus oryzae, which was also isolated from the corn flour, synergistic production of bongkrekic acid was observed. The results suggest a mechanism for bongkrekic acid intoxication, a phenomenon previously thought to be restricted to specific regions of Indonesia and China.


Assuntos
Cerveja/efeitos adversos , Ácido Bongcréquico/toxicidade , Burkholderia gladioli/isolamento & purificação , Ácido Bongcréquico/análise , Burkholderia gladioli/patogenicidade , Cromatografia Líquida , Surtos de Doenças , Farinha/microbiologia , Humanos , Espectrometria de Massas , Moçambique
9.
World J Surg ; 41(4): 954-962, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27800590

RESUMO

BACKGROUND: Trauma contributes more than ten percent of the global burden of disease. Initial assessment and resuscitation of trauma patients often requires rapid diagnosis and management of multiple concurrent complex conditions, and errors are common. We investigated whether implementing a trauma care checklist would improve care for injured patients in low-, middle-, and high-income countries. METHODS: From 2010 to 2012, the impact of the World Health Organization (WHO) Trauma Care Checklist program was assessed in 11 hospitals using a stepped wedge pre- and post-intervention comparison with randomly assigned intervention start dates. Study sites represented nine countries with diverse economic and geographic contexts. Primary end points were adherence to process of care measures; secondary data on morbidity and mortality were also collected. Multilevel logistic regression models examined differences in measures pre- versus post-intervention, accounting for patient age, gender, injury severity, and center-specific variability. RESULTS: Data were collected on 1641 patients before and 1781 after program implementation. Patient age (mean 34 ± 18 vs. 34 ± 18), sex (21 vs. 22 % female), and the proportion of patients with injury severity scores (ISS) ≥ 25 (10 vs. 10 %) were similar before and after checklist implementation (p > 0.05). Improvement was found for 18 of 19 process measures, including greater odds of having abdominal examination (OR 3.26), chest auscultation (OR 2.68), and distal pulse examination (OR 2.33) (all p < 0.05). These changes were robust to several sensitivity analyses. CONCLUSIONS: Implementation of the WHO Trauma Care Checklist was associated with substantial improvements in patient care process measures among a cohort of patients in diverse settings.


Assuntos
Lista de Checagem , Avaliação de Processos em Cuidados de Saúde/normas , Ferimentos e Lesões/terapia , Adulto , Feminino , Humanos , Masculino , Organização Mundial da Saúde
10.
Chimia (Aarau) ; 70(10): 684-693, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27779925

RESUMO

This report provides an outline of a program for the discovery of new public health insecticides for malaria vector control. The status of malaria vector control is first reviewed in terms of the chemical, physical chemical, and biochemical properties of the current WHOPES-recommended and approved vector control agents. This review provides a basis for a discussion on the critical need for discovery and development of multiple new chemical malaria vector control agents with novel and diverse modes of action. The Innovative Vector Control Consortium (IVCC) New Active Ingredient Target Product Profile (TPP) describes the essential attributes for a successful new malaria vector control agent and then serves as the basis for development of a discovery cascade. The cascade addresses these attributes experimentally at each stage of the discovery process - from design and assembly of an appropriate collection of chemicals for screening, through development of testing protocols to sort candidates, and into the detailed profiling of advanced pre-development candidates against TPP requirements. In addition, this program defines a staged development system to provide intermediate guidance to the insecticide explorer regarding the progress of their discovery program against the ultimate product goal.


Assuntos
Descoberta de Drogas , Insetos Vetores , Inseticidas/farmacologia , Malária/prevenção & controle , Controle de Mosquitos/métodos , Animais , Avaliação Pré-Clínica de Medicamentos
11.
PLoS One ; 9(4): e91907, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24740519

RESUMO

The slugs of Britain and Ireland form a well-studied fauna of economic importance. They include many widespread European species that are introduced elsewhere (at least half of the 36 currently recorded British species are established in North America, for example). To test the contention that the British and Irish fauna consists of 36 species, and to verify the identity of each, a species delimitation study was conducted based on a geographically wide survey. Comparisons between mitochondrial DNA (COI, 16S), nuclear DNA (ITS-1) and morphology were investigated with reference to interspecific hybridisation. Species delimitation of the fauna produced a primary species hypothesis of 47 putative species. This was refined to a secondary species hypothesis of 44 species by integration with morphological and other data. Thirty six of these correspond to the known fauna (two species in Arion subgenus Carinarion were scarcely distinct and Arion (Mesarion) subfuscus consisted of two near-cryptic species). However, by the same criteria a further eight previously undetected species (22% of the fauna) are established in Britain and/or Ireland. Although overlooked, none are strictly morphologically cryptic, and some appear previously undescribed. Most of the additional species are probably accidentally introduced, and several are already widespread in Britain and Ireland (and thus perhaps elsewhere). At least three may be plant pests. Some evidence was found for interspecific hybridisation among the large Arion species (although not involving A. flagellus) and more unexpectedly in species pairs in Deroceras (Agriolimacidae) and Limacus (Limacidae). In the latter groups, introgression appears to have occurred in one direction only, with recently-invading lineages becoming common at the expense of long-established or native ones. The results show how even a well-studied, macroscopic fauna can be vulnerable to cryptic and undetected invasions and changes.


Assuntos
Gastrópodes/genética , Animais , Biodiversidade , Gastrópodes/anatomia & histologia , Variação Genética , Haplótipos , Irlanda , Filogenia , Especificidade da Espécie , Reino Unido
12.
Ecol Appl ; 24(6): 1258-74, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-29160647

RESUMO

Wood borers and bark beetles are among the most serious forest pests worldwide. Many such species have become successful invaders, often causing substantial, costly damages to forests. Here we design and evaluate the cost-efficiency of a trap-based surveillance program for early detection of wood borers and bark beetles at risk of establishing in New Zealand. Although costly, a surveillance program could lead to earlier detection of newly established forest pests, thereby increasing the likelihood of successful eradication and reducing control costs and damages from future invasions. We develop a mechanistic bioeconomic model that relates surveillance intensity (i.e., trap density) and invasion size to probabilities of detection and control. It captures the dynamics of invasive species establishment, spread, and damages to urban and plantation forests. We employ the model to design surveillance programs that provide the greatest net present benefits. Our findings suggest that implementing a surveillance trapping program for invasive wood borers and bark beetles would provide positive net benefits under all scenarios considered. The economically optimal trapping strategy calls for a very high investment in surveillance: about 10 000 traps in each year of the 30-year surveillance program, at a present value cost of US$54 million. This strategy provides a 39% reduction in costs compared with no surveillance, corresponding to an expected net present benefit of approximately US$300 million. Although surveillance may provide the greatest net benefits when implemented at relatively high levels, our findings also show that even low levels of surveillance are worthwhile: the economic benefits from surveillance more than offset the rising costs associated with increasing trapping density. Our results also show that the cost-efficiency of surveillance varies across target regions because of differences in pest introduction and damage accumulation rates across locales, with greater surveillance warranted in areas closer to at-risk, high-value resources and in areas that receive more imported goods that serve as an invasion pathway.


Assuntos
Conservação dos Recursos Naturais/economia , Controle de Insetos/métodos , Insetos/classificação , Espécies Introduzidas/estatística & dados numéricos , Distribuição Animal , Animais , Conservação dos Recursos Naturais/métodos , Análise Custo-Benefício , Monitoramento Ambiental/economia , Monitoramento Ambiental/métodos , Modelos Biológicos , Nova Zelândia , Fatores de Tempo
13.
Pest Manag Sci ; 59(1): 107-13, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12558105

RESUMO

The discovery and investigation of a novel family of herbicides containing a diaryl acetal are described. The stability of the acetal limited herbicidal efficacy and recognizing that fact led to the design of analogs with commercial levels of post-emergence activity on broadleaf weeds. These compounds inhibited acetolactate synthase and in vitro activity data were used to guide target design. However, no members of this family provided a commercially valuable combination of herbicidal efficacy and crop selectivity.


Assuntos
Herbicidas/síntese química , Herbicidas/farmacologia , Acetolactato Sintase/antagonistas & inibidores , Acetolactato Sintase/metabolismo , Herbicidas/química , Herbicidas/toxicidade , Estrutura Molecular , Plantas/efeitos dos fármacos , Plantas/enzimologia , Relação Estrutura-Atividade
14.
Pest Manag Sci ; 58(12): 1175-86, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12476990

RESUMO

A novel series of substituted 3-phenyl benzoylpyrazoles were prepared and tested as potential grass herbicides. The targeted materials were prepared by three newly developed synthetic routes, which allowed a comprehensive study of the SAR (structure-activity relationships) of this series. The best combination of grass weed activity (Avena fatua L, Setaria viridis (L) Beauv and Alopecurus myosuroides Huds) and wheat selectivity was obtained with an alkoxy group in the 4-position of the phenyl ring. Activity was further enhanced by the presence of tert-butyl on the pyrazole and a methyl group at the C-2 position of the benzoyl moiety. The alkoxy-substituted 3-phenylbenzoylpyrazoles are a novel class of herbicides with potential utility for control of important grass weeds in cereals.


Assuntos
Herbicidas/toxicidade , Pirazóis/toxicidade , 4-Hidroxifenilpiruvato Dioxigenase/antagonistas & inibidores , Herbicidas/síntese química , Espectroscopia de Ressonância Magnética , Estrutura Molecular , Poaceae/efeitos dos fármacos , Pirazóis/síntese química , Relação Estrutura-Atividade
15.
J Agric Food Chem ; 50(16): 4554-66, 2002 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-12137475

RESUMO

Molecular modeling was used to propose an "active conformation" for the R-2-phenoxypropionic acid portion of the aryloxyphenoxypropionic acid series of herbicidal acetyl CoA carboxylase (ACCase) inhibitors. This candidate active conformation is a low-energy conformer with the R-methyl distal to the phenoxy fragment, stabilized by the generalized anomeric effect around the propionate ether bond; the inactive S-enantiomer has difficulty accessing this conformation due to steric interaction of the S-methyl with the o-hydrogen of the phenyl. This candidate conformation was challenged by preparation of a series of novel rigid analogues. ACCase inhibition data suggest that the systems which contain a fused five-membered, but not a six-membered, ring present the necessary pharmacophore to the active site of ACCase, confirming the active conformation hypothesis and demonstrating that the precise placement of the carboxylate relative to the phenyl group is more critical than the placement of the methyl.


Assuntos
Acetil-CoA Carboxilase/antagonistas & inibidores , Inibidores Enzimáticos/química , Herbicidas/química , Propionatos/química , Sítios de Ligação , Fenômenos Químicos , Físico-Química , Modelos Moleculares , Conformação Molecular , Éteres Fenílicos , Estereoisomerismo , Relação Estrutura-Atividade , Termodinâmica
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