67 research outputs found
Oxidation and reduction rates for organic carbon in the Amazon mainstream tributary and floodplain, inferred from distributions of dissolved gases
Concentrations of CO2, O2, CH4, and N2O in the Amazon River system reflect an oxidation-reduction sequence in combination with physical mixing between the floodplain and the mainstem. Concentrations of CO2 ranged from 150 microM in the Amazon mainstem to 200 to 300 microM in aerobic waters of the floodplain, and up to 1000 microM in oxygen-depleted environments. Apparent oxygen utilization (AOU) ranged from 80 to 250 microM. Methane was highly supersaturated, with concentrations ranging from 0.06 microM in the mainstem to 100 microM on the floodplain. Concentrations of N2O were slightly supersaturated in the mainstem, but were undersaturated on the floodplain. Fluxes calculated from these concentrations indicated decomposition of 1600 g C sq m y(-1) of organic carbon in Amazon floodplain waters. Analysis of relationships between CH4, O2, and CO2 concentrations indicated that approximately 50 percent of carbon mineralization on the floodplain is anaerobic, with 20 percent lost to the atmoshphere as CH4. The predominance of anaerobic metabolism leads to consumption of N2O on the flood plane. Elevated concentrations of CH4 in the mainstem probably reflect imput from the floodplain, while high levels of CO2 in the mainstem are derived from a combination of varzea drainage and in situ respiration
Os créditos de titularidade de instituições financeiras nos processos de insolvência e de falência e recuperação judicial de empresas: análise dos conceitos vigentes há quinze anos nos ordenamentos jurídicos de Portugal e do Brasil
- Divulgação dos SUMÁRIOS das obras recentemente incorporadas ao acervo da Biblioteca Ministro Oscar Saraiva do STJ. Em respeito à Lei de Direitos Autorais, não disponibilizamos a obra na íntegra.- Localização na estante: 347.736(81:469) F178c- Coordenado por: Ivo Waiberg, José Horacio H. R. Ribeiro e Marcelo Barbosa Sacramone
Instantaneous Normal Mode Analysis of Supercooled Water
We use the instantaneous normal mode approach to provide a description of the
local curvature of the potential energy surface of a model for water. We focus
on the region of the phase diagram in which the dynamics may be described by
the mode-coupling theory. We find, surprisingly, that the diffusion constant
depends mainly on the fraction of directions in configuration space connecting
different local minima, supporting the conjecture that the dynamics are
controlled by the geometric properties of configuration space. Furthermore, we
find an unexpected relation between the number of basins accessed in
equilibrium and the connectivity between them.Comment: 5 pages, 4 figure
Treatment patterns and outcomes in relapsed/refractory follicular lymphoma: results from the international SCHOLAR-5 study
The SCHOLAR-5 study examines treatment patterns and outcomes of real-world follicular lymphoma (FL) patients on 3rd line of treatment (LoT) or higher, for whom existing data are limited. SCHOLAR-5 is a retrospective cohort study using data from adults (≥ 18 years) with grade 1-3a FL, initiating ≥3rd LoT after June 2014 at major lymphoma centers in the United States (US) and Europe. Objective response rate (ORR), complete response (CR), progression free survival (PFS) and overall survival (OS) were analyzed by LoT. Time-to-event outcomes were assessed using Kaplan-Meier methods. Of 128 patients, 87 initiated 3rd LoT, 63 initiated 4th LoT, and 47 initiated 5th LoT. At 1st eligible LoT, 31% progressed within 24-months of 1st LoT anti-CD20 combination therapy, 28% had prior autologous stem-cell transplantation, and 31% were refractory to the previous LoT. The most common regimen in each LoT was chemoimmunotherapy; however, experimental drugs were increasingly used at later LoTs. In the US, anti-CD20 monotherapy was more common at ≥3rd LoT compared to Europe, where stem cell transplants were more common. ORR at 3rd LoT was 68% (CR 44%), but decreased after each LoT to 37% (CR 22%) in ≥5 LoT. Median OS and PFS at 3rd LoT were 68 and 11 months, respectively, and reduced to 43 and 4 months at ≥5 LoT. Treatments were heterogenous at each LoT in both the US and Europe. Few FL patients achieved complete response in later LoT, and duration of response and survival diminished with each subsequent line
Obtenção e caracterização de gelatina de pele de tilápia-do-nilo (Oreochromis niloticus) em escala piloto.
bitstream/item/164639/1/BPD17023.pd
The detection of diffuse emission in HCG 16 with XMM-Newton
We report results obtained from analysis of the XMM-Newton observation of the
compact group of galaxies HCG 16. It is a peculiar system composed of 7
spirals,
6 of which are active, and its nature as a bound system has been much
debated. The EPIC camera observations give new insights into the X-ray
parameters describing the physical status of the group. We detect diffuse X-ray
emission with a rather elliptical morphology which extends to at least a radius
of 135 h^{-1}_{50} kpc from the group centre. The spectrum within this region
is well modelled by a thermal plasma with a temperature of 0.49+/-0.17 keV, and
a non-zero metallicity. We measure a bolometric X-ray luminosity of 9.6 10{^40}
h^{-2}_{50} erg/s which may be only a small fraction of the total luminosity
because of the limit in spatial detection arising from the high background
level. Despite its low temperature and luminosity, HCG 16 obeys the Lx-T
relation obtained for brighter galaxy groups even if it lies in a very extreme
position. The properties of the diffuse emission confirm the bound nature of
HCG 16 even if the gas trapped in the potential well may not yet be virialized.
This reopens the debate about the real nature of spiral-dominated galaxy
groups, and on their role in a more general cosmological context.Comment: 13 pages, 6 figures, uses aa.cls style, Latex. Accepted for
publication in A&
Screening for bovine leukocyte adhesion deficiency, deficiency of uridine monophosphate synthase, complex vertebral malformation, bovine citrullinaemia, and factor XI deficiency in Holstein cows reared in Turkey
A group contribution model for determining the vaporization enthalpy of organic compounds at the standard reference temperature of 298K
Article on a group contribution model for determining the vaporization enthalpy of organic compounds at the standard reference temperature of 298 K
Antigen retrieval, blocking, detection and visualisation systems in immunohistochemistry: A review and practical evaluation of tyramide and rolling circle amplification systems.
To achieve specificity and sensitivity using immunohistochemistry it is necessary to combine the
application of validated primary antibodies with optimised pre-treatment, detection and visualisation
steps. The influence of these surrounding procedures is reviewed. A practical evaluation of tyramide
signal amplification and rolling circle amplification detection methods is provided in which formalin
fixed paraffin embedded sections of adenocarcinomas of breast, colon and lung together with squamous
metaplasia of lung were immunostained with CD20 and CK19 primary antibodies. The results indicate
that the detection systems are of comparable sensitivity and specificity
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