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Registros recuperados: 10
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Biosecurity and Infectious Animal Disease AgEcon
Hennessy, David A..
The spatial dimension of agricultural production is important when a communicable disease enters a region. This paper considers two sorts of biosecurity risk that producers can seek to protect against. One concerns the risk of spread: that neighboring producers do not take due care in protecting against being infected by a disease already in the region. In this case, producer efforts substitute with those of near neighbors. For representative spatial production structures, we characterize Nash equilibrium protection levels and show how spatial production structure matters. The other sort of risk concerns entry: that producers do not take due care in preventing the disease from entering the region. In this case, producer heterogeneity has subtle effects on...
Tipo: Working or Discussion Paper Palavras-chave: Circle and line topologies; Complements and substitutes; Epidemic; Public good; Livestock Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/18434
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Canker and decline diseases caused by soil- and airborne Phytophthora species in forests and woodlands Naturalis
Jung, T.; Pérez-Sierra, A.; Durán, A.; Horta Jung, M.; Balci, Y.; Scanu, B..
Most members of the oomycete genus Phytophthora are primary plant pathogens. Both soil- and airborne Phytophthora species are able to survive adverse environmental conditions with enduring resting structures, mainly sexual oospores, vegetative chlamydospores and hyphal aggregations. Soilborne Phytophthora species infect fine roots and the bark of suberized roots and the collar region with motile biflagellate zoospores released from sporangia during wet soil conditions. Airborne Phytophthora species infect leaves, shoots, fruits and bark of branches and stems with caducous sporangia produced during humid conditions on infected plant tissues and dispersed by rain and wind splash. During the past six decades, the number of previously unknown Phytophthora...
Tipo: Article / Letter to the editor Palavras-chave: Disease management; Epidemic; Forest dieback; Invasive pathogens; Nursery infestation; Root rot.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/649734
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Chloroquine resistance status a decade after : Re-emergence of sensitive Plasmodium falciparum strains in malaria endemic and epidemic areas in Kenya OAK
Wangai, L.N; Kimani, F.T; Omar, S.A; Karanja, S.M; Nderu, D.W; Magoma, G; Mutua, D.
Development and spread of chloroquine (CQ) resistance led to its withdrawal in most malaria endemic countries. In Kenya, this occurred in 1998 when clinical efficacy dropped below 50%. Less than a decade after CQ was removed from routine use in Malawi, the drug has reversed to activity and is again effective for first-line treatment of uncomplicated malaria. There is a probability of a similar reversed activity in Kenya for more 10 years of its absence in uncomplicated Plasmodium falciparum malaria treatment. The present study was aimed at establishing the CQ resistance status in the country, 10 years after its withdrawal, by looking at high malaria transmission zone, Mbita, a malaria endemic area and some malaria epidemic areas of the Kenyan highlands....
Palavras-chave: Plasmodium falciparum; Chloroquine (CQ); Resistance; Endemic; Epidemic.
Ano: 2011 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3096
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Economic Aspects of Agricultural and Food Biosecurity in the United States AgEcon
Hennessy, David A..
Concerns about biosecurity in the food system raise a variety of issues about how the system is presently organized, why it might be vulnerable, what one could reasonably do to better secure it, and the costs of doing so. After presenting some facts about US agriculture and food, this paper considers three economic aspects of the general problem. One is the global problem, or the way biosecurity measures can affect how countries relate to each other and the global consequences that result. Another is how to best manage the immediate aftermath of a realized threat in order to minimize damage. The third is how to seek to prevent realization of the threat. Some policy alternatives are also presented.
Tipo: Working or Discussion Paper Palavras-chave: Agro-terrorism; Animal disease; Biosecurity; Epidemic; Food system policy; Food Consumption/Nutrition/Food Safety.
Ano: 2007 URL: http://purl.umn.edu/9371
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Epidemiología del variegado del chile (Capsicum annuum L.) en la región de Yurécuaro, Michoacán. Colegio de Postgraduados
Camacho Tapia, Moisés.
En los municipios de Yurécuaro y Vista Hermosa, con el objetivo de determinar el comportamiento de la epidemia del variegado del chile asociada a Candidatus Liberibacter solanacearum, se realizó un análisis espacio-temporal de dicha epidemia. Para confirmar la presencia de la bacteria, se colectaron muestras de chile con síntomas de clorosis, deformación de hojas, variegado y albinismo, además semillas de frutos de plantas en etapa de corte, también se colectó el insecto vector Bactericera cockerelli Sulc. Se realizó muestreo regional de diez parcelas de cultivo de chile en la etapa final para comparar la distribución espacial. Se realizaron mapas bidimensionales y tridimensionales, además se estimaron los índices de agregación usando los métodos de...
Palavras-chave: Candidatus Liberibacter solanacearum; Variegado de chile; Epidemia; Indice de agregación; Modelo logístico; Variegated pepper; Epidemic; Index of aggregation; Logistic model; Maestría; Fitopatología.
Ano: 2010 URL: http://hdl.handle.net/10521/211
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Epidemiología del variegado del chile (Capsicum annuum L.) en la región de Yurécuaro, Michoacán. Colegio de Postgraduados
Camacho Tapia, Moisés.
En los municipios de Yurécuaro y Vista Hermosa, con el objetivo de determinar el comportamiento de la epidemia del variegado del chile asociada a Candidatus Liberibacter solanacearum, se realizó un análisis espacio-temporal de dicha epidemia. Para confirmar la presencia de la bacteria, se colectaron muestras de chile con síntomas de clorosis, deformación de hojas, variegado y albinismo, además semillas de frutos de plantas en etapa de corte, también se colectó el insecto vector Bactericera cockerelli Sulc. Se realizó muestreo regional de diez parcelas de cultivo de chile en la etapa final para comparar la distribución espacial. Se realizaron mapas bidimensionales y tridimensionales, además se estimaron los índices de agregación usando los métodos de...
Palavras-chave: Candidatus Liberibacter solanacearum; Variegado de chile; Epidemia; Indice de agregación; Modelo logístico; Variegated pepper; Epidemic; Index of aggregation; Logistic model; Maestría; Fitopatología.
Ano: 2010 URL: http://hdl.handle.net/10521/211
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Isolation, Identification and Molecular Characterization of Highly Pathogenic Newcastle Disease Virus From Field Outbreaks BABT
Ashraf,Asma; Shah,Muhammad Salah-ud-Din; Habib,Mudasser; Hussain,Mujahid; Mahboob,Shahid; Al-Ghanim,Khalid.
ABSTRACT Newcastle disease (ND) is a major infectious disease of the poultry caused by a virulent strain of Avian Paramyxovirus - 1, that is a single strand non-segmented negative sense RNA virus. ND virus is major threat to the poultry industry in many countries of the world. The study was aimed to isolate and identify Newcastle disease virus (NDV) by using a haemagglutination inhibition (HI) test and reverse transcription-polymerase chain reaction (RT-PCR) assay. A total 100 samples of infected and dead birds were collected from different poultry farms. The weight of the birds was ranged 1000-1200g. The birds were divided into 3 groups. Haemagglutination assay (HA) was performed to detect the presence of NDV in suspension of infected homogenized tissues...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Newcastle disease; Epidemic; Molecular characterization; Avian virus; RT-PCR.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100332
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Microbiological epidemiological history of meningococcal disease in Rio de Janeiro, Brazil BJID
Barroso,David Eduardo; Carvalho,DM; Casagrande,ST; Rebelo,MC; Soares,V; Zahner,V; Solari,CA; Nogueira,SA.
The main objectives of the present study were to investigate the clinical and laboratory features of meningococcal disease in the city of Rio de Janeiro, Brazil, during the overlap of 2 epidemics in the 1990s. We conducted a study of a series of cases of meningococcal disease admitted in a Meningitis Reference Hospital. All clinical isolates available were analyzed by means of microbiological epidemiological markers. In 1990, Neisseria meningitidis serogroup B:4,7:P1.19,15, 1.7,1 sulfadiazine-resistant of the ET-5 complex emerged causing epidemic disease. Despite mass vaccination campaign (VaMengoc B+C®), the ET-5 clone remained hyperendemic after the epidemic peaked. In 1993 to 1995, an epidemic of serogroup C belonged to the cluster A4 overlapped, with a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neisseria meningitidis; Meningococcal disease; Epidemic; Meningitis; Sepsis.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000300008
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Origin of spores to start and angular leaf spot epidemic. Repositório Alice
SARTORATO, A.; MESQUITA, G. M.; BOOGAERTS, J.; GARCIA, R. A. V. G..
2005
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Feijão; Bean; Phaseolus vulgaris; Angular; Spot; Epidemic.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/213547
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ผลของการเปลี่ยนแปลงสภาพภูมิอากาศต่อการระบาดของโรคข้าว จังหวัดเชียงรายและพะเยา Thai Agricultural
Nootjarin Jungkhun; Piyapa Srikhom; Konsiri Srinil; Taraporn Yuneyong; Kanteera Kanta.
Main objective of this study was to evaluate the relationship between climate changes and rice disease s epidemics in Chiangrai and Phayao provinces. The study was conducted at Chiangrai Rice Research Center during the year 2011-2013 by monthly broadcasting two popular rice varieties in the area; Phitsanulok 2 and Sanpatong 1. The experiment was carried out in Split plot in RCB Design with 3 replicates having month as main plot and variety as sub-plot. Disease incidence and severity were evaluated at 3 growth stages i.e. 20, 50 and 90 days after sowing. Concurrently, Disease incidence and severity were recorded for rice diseases in the farmers’ fields of Chiangrai and Phayao provinces having infected at 10 rai and above. Disease data showed that both rice...
Tipo: PhysicalObject Palavras-chave: Climate change; Temperature; Relative humidity; Rainfall; Rice disease; Epidemic; Global warming; Rice pathogen; Rice; Rice production; Phitsanulok 2 variety; Sanpatong 1 variety; Plant diseases survey; Pathogens; Chiangrai province; Phayao province; ข้าว; พันธุ์พิษณุโลก 2; พันธุ์สันป่าตอง 1; การผลิตข้าว; การสำรวจโรคพืช; โรคข้าว; เชื้อสาเหตุของโรค; การระบาดของโรค; ภาวะโลกร้อน; การเปลี่ยนแปลงสภาพภูมิอากาศ; อุณหภูมิ; ความชื้นสัมพัทธ์; ปริมาณน้ำฝน; การประเมินความเสียหาย; จ.เชียงราย; จ.พะเยา.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5695
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