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1.
Environ Monit Assess ; 191(Suppl 4): 814, 2020 Mar 17.
Artigo em Inglês | MEDLINE | ID: mdl-32185518

RESUMO

In response to the Deepwater Horizon oil spill, federal and state agencies conducted field studies to develop inputs for a shoreline deposition model used to estimate nearshore avian mortality resulting from the spill. A 2011 carcass drift study was designed to generate data on the likelihood that birds that died on the water would deposit along the northern Gulf of Mexico coast (rather than becoming lost at sea). In the case of the Deepwater Horizon oil spill, carcass losses at sea accounted for a significant portion of nearshore avian mortality. We evaluate the data collected during the Deepwater Horizon carcass drift study and compare the results obtained from the use of avian carcasses versus dummy carcasses (dummies) and the differences between those deployed nearshore versus further offshore. We conclude that, although the use of dummies provided valuable confirmation on the drift patterns of dead birds, dummies drifted greater distances, for longer periods of time, and were more likely to be observed beached compared to avian carcasses, with 64.6% of dummies beaching compared to 17.2% of carcasses. In response to future spills, researchers should account for these potential biases when incorporating dummy drift data into estimates of avian carcass loss. Further, none of the avian carcasses and dummies released more than 40 km from the shoreline made it to shore. In the northern Gulf of Mexico, carcasses that die on the waters farther offshore are unlikely to make it to shore to be captured in a deposition model; therefore, it may be appropriate to utilize a separate methodology to estimate offshore mortality. The applicability of these results to other spill events should be evaluated in the context of the specific spill characteristics.


Assuntos
Aves , Poluição por Petróleo , Poluentes Químicos da Água , Animais , Cadáver , Monitoramento Ambiental , Golfo do México , Movimentos da Água , Poluentes Químicos da Água/toxicidade
2.
Phys Rev Lett ; 121(22): 221801, 2018 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-30547637

RESUMO

The MiniBooNE experiment at Fermilab reports results from an analysis of ν_{e} appearance data from 12.84×10^{20} protons on target in neutrino mode, an increase of approximately a factor of 2 over previously reported results. A ν_{e} charged-current quasielastic event excess of 381.2±85.2 events (4.5σ) is observed in the energy range 200

3.
Phys Rev Lett ; 120(14): 141802, 2018 Apr 06.
Artigo em Inglês | MEDLINE | ID: mdl-29694148

RESUMO

We report the first measurement of monoenergetic muon neutrino charged current interactions. MiniBooNE has isolated 236 MeV muon neutrino events originating from charged kaon decay at rest (K^{+}→µ^{+}ν_{µ}) at the NuMI beamline absorber. These signal ν_{µ}-carbon events are distinguished from primarily pion decay in flight ν_{µ} and ν[over ¯]_{µ} backgrounds produced at the target station and decay pipe using their arrival time and reconstructed muon energy. The significance of the signal observation is at the 3.9σ level. The muon kinetic energy, neutrino-nucleus energy transfer (ω=E_{ν}-E_{µ}), and total cross section for these events are extracted. This result is the first known-energy, weak-interaction-only probe of the nucleus to yield a measurement of ω using neutrinos, a quantity thus far only accessible through electron scattering.

4.
Phys Rev Lett ; 118(22): 221803, 2017 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-28621993

RESUMO

The MiniBooNE-DM Collaboration searched for vector-boson mediated production of dark matter using the Fermilab 8-GeV Booster proton beam in a dedicated run with 1.86×10^{20} protons delivered to a steel beam dump. The MiniBooNE detector, 490 m downstream, is sensitive to dark matter via elastic scattering with nucleons in the detector mineral oil. Analysis methods developed for previous MiniBooNE scattering results were employed, and several constraining data sets were simultaneously analyzed to minimize systematic errors from neutrino flux and interaction rates. No excess of events over background was observed, leading to a 90% confidence limit on the dark matter cross section parameter, Y=ε^{2}α_{D}(m_{χ}/m_{V})^{4}≲10^{-8}, for α_{D}=0.5 and for dark matter masses of 0.01

5.
Phys Rev Lett ; 110(16): 161801, 2013 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-23679593

RESUMO

The MiniBooNE experiment at Fermilab reports results from an analysis of ν[over ¯](e) appearance data from 11.27×10(20) protons on target in the antineutrino mode, an increase of approximately a factor of 2 over the previously reported results. An event excess of 78.4±28.5 events (2.8σ) is observed in the energy range 200

6.
Phys Rev Lett ; 103(6): 061802, 2009 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-19792551

RESUMO

The MiniBooNE Collaboration reports a search for nu_{micro} and nu[over]_{micro} disappearance in the Deltam;{2} region of 0.5-40 eV;{2}. These measurements are important for constraining models with extra types of neutrinos, extra dimensions, and CPT violation. Fits to the shape of the nu_{micro} and nu[over]_{micro} energy spectra reveal no evidence for disappearance at the 90% confidence level (C.L.) in either mode. The test of nu[over]_{micro} disappearance probes a region below Deltam;{2} = 40 eV;{2} never explored before.

7.
West Indian Med J ; 54(4): 232-5, 2005 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16312188

RESUMO

The objective of this study was to determine the impact of Hurricane Ivan on the operations of the Emergency Department (ED) at the University Hospital of the West Indies (UHWI). Hurricane Ivan,--a category four Hurricane--traversed the south coast of the island of Jamaica on September 10, 2004, causing damage to several parishes. The study design is a descriptive retrospective record-based incidence study of all admissions to the ED commencing at 8:00 am September 10, 2004 and ending at 12 midnight September 11, 2004, covering the period of the entire duration of the hurricane as well as immediately after. Injuries that took place during the hurricane, inclusive of gun-shot wounds (GSWs) represented 40% of the total patients seen. The types of admission are listed categorically as well as specific items to be considered in planning for potential disasters of higher magnitude. Overall, the coping mechanism of the ED at UHWI was adequate for this magnitude of disaster.


Assuntos
Planejamento em Desastres/organização & administração , Desastres/estatística & dados numéricos , Serviço Hospitalar de Emergência/estatística & dados numéricos , Hospitais Universitários/estatística & dados numéricos , Revisão da Utilização de Recursos de Saúde , Ferimentos e Lesões/epidemiologia , Adulto , Serviço Hospitalar de Emergência/organização & administração , Feminino , Humanos , Incidência , Jamaica/epidemiologia , Masculino , Pessoa de Meia-Idade , Admissão do Paciente/estatística & dados numéricos , Estudos Retrospectivos , Ferimentos e Lesões/etiologia
9.
West Indian med. j ; West Indian med. j;54(4): 232-235, Sep. 2005.
Artigo em Inglês | LILACS | ID: lil-472961

RESUMO

The objective of this study was to determine the impact of Hurricane Ivan on the operations of the Emergency Department (ED) at the University Hospital of the West Indies (UHWI). Hurricane Ivan,--a category four Hurricane--traversed the south coast of the island of Jamaica on September 10, 2004, causing damage to several parishes. The study design is a descriptive retrospective record-based incidence study of all admissions to the ED commencing at 8:00 am September 10, 2004 and ending at 12 midnight September 11, 2004, covering the period of the entire duration of the hurricane as well as immediately after. Injuries that took place during the hurricane, inclusive of gun-shot wounds (GSWs) represented 40of the total patients seen. The types of admission are listed categorically as well as specific items to be considered in planning for potential disasters of higher magnitude. Overall, the coping mechanism of the ED at UHWI was adequate for this magnitude of disaster.


El objetivo de este estudio fue determinar el impacto del huracán Iván en las operaciones del Departamento de Emergencia (DE) en el Hospital Universitario de West Indies (HUWI). El huracán Iván – un huracán de categoría 4 – atravesó la costa sur de la isla de Jamaica el 10 de septiembre de 2004, causando daños en varias provincias. El diseño del estudio consiste en un estudio descriptivo y retrospectivo de incidencias, basado en los registros de todos los ingresos al DE, a partir de las 8:00 del 10 de septiembre de 2004, hasta las 12 de la noche del 11 de septiembre de 2004. Es decir, el estudio abarca todo el período de duración del huracán y el tiempo inmediatamente después. Las lesiones ocurridas durante el período del huracán – incluidas las heridas de bala – representaron el 40% del total de los pacientes atendidos. Se hace un listado de los tipos de ingresos por categoría así como de los artículos específicos a ser tomados en cuenta a la hora de hacer planes en relación con desastres potenciales de mayor magnitud. En general, los mecanismos operativos del DE del HUWI fueron adecuados para enfrentar un desastre de esta magnitud.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Desastres Naturais/estatística & dados numéricos , Ferimentos e Lesões/epidemiologia , Hospitais Universitários , Planejamento em Desastres/organização & administração , Revisão da Utilização de Recursos de Saúde , Serviço Hospitalar de Emergência , Admissão do Paciente/estatística & dados numéricos , Estudos Retrospectivos , Ferimentos e Lesões/etiologia , Incidência , Jamaica/epidemiologia , Serviço Hospitalar de Emergência/organização & administração
11.
J Pediatr ; 133(5): 701-4, 1998 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-9821434

RESUMO

We carried out a nationwide case-control study, comparing 393 case patients with sudden infant death syndrome (SIDS) with 1592 control subjects, in order to examine sheepskin bedding as a risk factor. Sheepskin use was similar for case patients and control subjects (both, 42%; adjusted odds ratio [OR] = 1.28; 95% CI = 0.92, 1.79). Sheepskin use among the control subjects was associated with socioeconomic advantage. The relative risk for SIDS with sheepskin use was significantly increased in the infants placed prone to sleep (adjusted OR = 1.70; 95% CI = 1.08, 2.67), but not for infants placed in the supine or lateral position (adjusted OR = 0.82; 95% CI = 0.45, 1.48). An interaction between sheepskin use and bed sharing was also found. Sheepskin use was associated with a decreased risk of SIDS among infants sharing beds (adjusted OR = 0.61; 95% CI = 0.38, 0.99), but an increased risk among infants not bed sharing (adjusted OR = 2.25; 95% CI = 1.32, 3.86). We conclude that if an infant needs to be placed prone to sleep for medical reasons, a sheepskin should not be used as underbedding. However, for infants placed supine to sleep, sheepskins are not associated with an increased risk of SIDS.


Assuntos
Roupas de Cama, Mesa e Banho , Ovinos , Morte Súbita do Lactente/etiologia , Animais , Feminino , Humanos , Lactente , Masculino , Nova Zelândia/epidemiologia , Razão de Chances , Decúbito Ventral , Risco , Fatores de Risco , Fatores Socioeconômicos , Morte Súbita do Lactente/epidemiologia , Morte Súbita do Lactente/prevenção & controle
12.
J Pediatr ; 99(6): 980-3, 1981 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-7031215

RESUMO

Forty-nine girls between the ages of 2 and 18 years with a symptomatic urinary tract infection documented by two clean-catch urine cultures completed a double-blind study comparing the effectiveness of three days versus ten days of nitrofurantoin macrocrystal therapy. Localization of the infection to the lower urinary tract was presumed on the basis of clinical presentation. All patients had sterile urine on day two or three of therapy. In the ten-day group, two of 23 patients (8.7%) experienced a single relapse, and seven patients (30%) had 12 episodes of reinfection during a six-month follow-up. In the three-day group, two of 26 patients (7.7%) had a single relapse, and six patients (23%) had 12 episodes of reinfection. The rates of relapse and reinfection in the compared groups were not statistically significantly different (P greater than 0.05). Three days of treatment with nitrofurantoin macrocrystals is an effective regimen for symptomatic girls presumed to have uncomplicated lower urinary tract infections.


Assuntos
Infecções Bacterianas/tratamento farmacológico , Nitrofurantoína/uso terapêutico , Infecções Urinárias/tratamento farmacológico , Adolescente , Criança , Pré-Escolar , Ensaios Clínicos como Assunto , Feminino , Humanos , Nitrofurantoína/administração & dosagem , Placebos , Distribuição Aleatória , Fatores de Tempo
13.
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