1,172 research outputs found
Synanthropy Of Sarcophagidae (diptera) In Southeastern Brazil
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sarcophagidae (Diptera) are potential vectors of several pathogens. They are also very important in forensic entomology, providing basic information on the circumstances of death. The objective of this study was to determine the synanthropic index of adult Sarcophagidae collected in Rio Claro, state of São Paulo, southeastern Brazil. Sampling occurred between September 2009 and August 2010. Traps baited with sardines, beef liver, or minced meat were set for five consecutive days per month in three distinct ecological areas representing urban, rural, and forest environments. A total of 440 specimens of sarcophagids were collected. The most abundant species was Peckia (Sarcodexia) lambens (Wiedemann), followed by Oxysarcodexia thornax (Walker), Peckia (Euboettcheria) collusor (Curran & Walley), Peckia (Euboettcheria) sp., and Peckia (Pattonella) intermutans (Walker). The only species with positive synanthropic index values were O. thornax and P. (S.) lambens, which demonstrated a greater preference for inhabited areas. Peckia (Euboettcheria) florencioi (Prado & Fonseca), P. (P.) intermutans, and Peckia (Euboettcheria) australis (Townsend) were only found in the forested area, which demonstrates their importance in forensic entomology because of their preference for a particular type of environment. The greatest number of sarcophagids was found in the forest environment; however, only the forest and rural areas were significantly different in Sarcophagidae abundance. © 2016, Sociedade Entomológica do Brasil.4566376412009/03540-0, FAPESP, Fundação de Amparo à Pesquisa do Estado de São PauloFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP
Productive characterisation in iberian pig varieties. II: preliminar study of birht weihtg and preweaning weight
We have studied the behaviour of six varieties of the Iberian Pig breed in the preweaning period with a view to determine the preliminary productive characterisation of this breed. We have used a sampled formed by 2001 piglets (males and females) where the birth, 30 days and 60 days weight were collected. From our preliminary results we have concluded a mean birth weight of 1,37 kg a 30 days weight of 13,49 kg. And a 60 days weight of 20 kg standing out the Retinto variety as the population presenting the best growing capacity in this physiological period, even though we have to go deep in this study using a bigger sample.Se estudia el comportamiento de seis variedades del cerdo Ibérico en el periodo predestete con vistas a la caracterización productiva preliminar de la raza. Para ello se utilizó una muestra compuesta por 2001 lechones entre machos y hembras donde se estudió el peso al nacimiento y los pesos a los 30 y 60 días. De los resultados preliminares obtenidos concluimos un peso al nacimiento medio de 1,37 kg, un peso a los 30 días de vida en torno a 13,49 kg y un peso a los 60 días o peso de destete en alrededor de 20 kg, destacando la variedad Retinto como la población que presenta mejor capacidad de crecimiento en este periodo fisiológico, quedando a la espera de profundizar este estudio con una muestra animal más amplia
Aging increases susceptibility to high fat diet-induced metabolic syndrome in C57BL/6 mice: Improvement in glycemic and lipid profile after antioxidant therapy
Nonalcoholic fatty liver disease (NAFLD) has been considered a novel component of the metabolic syndrome (MetS), with the oxidative stress participating in its progression. This study aimed to evaluate the metabolic profile in young and old mice with MetS, and the effects of apocynin and tempol on glycemic and lipid parameters. Young and old C57BL/6 mice with high fat diet- (HFD-) induced MetS received apocynin and tempol 50 mg·kg(-1)/day in their drinking water for 10 weeks. After HFD, the young group showed elevated fasting glucose, worsened lipid profile in plasma, steatosis, and hepatic lipid peroxidation. Nevertheless, the old group presented significant increase in fasting insulin levels, insulin resistance, plasma and hepatic lipid peroxidation, and pronounced steatosis. The hepatic superoxide dismutase and catalase activity did not differ between the groups. Tempol and apocynin seemed to prevent hepatic lipid deposition in both groups. Furthermore, apocynin improved glucose tolerance and insulin sensitivity in old mice. In summary, old mice are more susceptible to HFD-induced metabolic changes than their young counterparts. Also, the antioxidant therapy improved insulin sensitivity and glucose tolerance, and in addition, apocynin seemed to prevent the HFD-induced hepatic fat deposition, suggesting an important role of oxidative stress in the induction of NAFLD
Caracterización de las variedades minoritarias del cerdo ibérico por la aptitud sexual del macho. Proyecto inicial
El presente proyecto se propone abordar un criterio absolutamente novedoso para la caracterización de los animales domésticos mediante la utilización de variables relacionadas con la aptitud reproductiva, algo que está especialmente relacionado con la productividad de los animales de ciclo corto dedicados a la producción cárnica. La metodología propuesta a continuación se aplicará a 24 animales en cada fase de estudio en que se utilizarán distintas variedades de cerdo ibérico. Actualmente estamos trabajando con el primer lote de animales, concretamente las variedades Manchado de Jabugo, Retinto y Torbiscal. La caracterización reproductiva abordará cuatro ópticas diferentes. Primeramente se realizarán evaluaciones de características anatómicas externas del aparato reproductor del macho (circunferencia escrotal, volumen, forma e implantación testicular). En segundo lugar se tipificarán los aspectos relacionados con el comportamiento sexual del macho referido tanto a sus actitudes para la monta natural como para la inseminación artificial. En tercer lugar se estudiarán las características del semen (aspectos físicos y morfológicos). Finalmente, se constituirá un banco de germoplasma de cerdos Ibéricos, donde se almacenarán dosis de semen de las diversas variedades de cerdo Ibérico para conservación o intercambio entre investigadores y ganaderos, así como su utilización en programas de inseminación artificial o mejora genética
Diffusion quantum Monte Carlo study of three-dimensional Wigner crystals
We report diffusion quantum Monte Carlo calculations of three-dimensional
Wigner crystals in the density range r_s=100-150. We have tested different
types of orbital for use in the approximate wave functions but none improve
upon the simple Gaussian form. The Gaussian exponents are optimized by directly
minimizing the diffusion quantum Monte Carlo energy. We have carefully
investigated and sought to minimize the potential biases in our Monte Carlo
results. We conclude that the uniform electron gas undergoes a transition from
a ferromagnetic fluid to a body-centered-cubic Wigner crystal at r_s=106+/-1.
The diffusion quantum Monte Carlo results are compared with those from
Hartree-Fock and Hartree theory in order to understand the role played by
exchange and correlation in Wigner crystals. We also study "floating" Wigner
crystals and give results for their pair-correlation functions
Criopreservación de semen de las variedades minoritarias del cerdo ibérico: resultados preliminares de la fertilidad "in vivo"
Resumen de la comunicación presentada al III Congreso Ibérico sobre Recursos Genéticos Animale
Are the magnetic fields of millisecond pulsars ~ 10^8 G?
It is generally assumed that the magnetic fields of millisecond pulsars
(MSPs) are G. We argue that this may not be true and the fields
may be appreciably greater. We present six evidences for this: (1) The G field estimate is based on magnetic dipole emission losses which is
shown to be questionable; (2) The MSPs in low mass X-ray binaries (LMXBs) are
claimed to have G on the basis of a Rayleygh-Taylor instability
accretion argument. We show that the accretion argument is questionable and the
upper limit G may be much higher; (3) Low magnetic field neutron
stars have difficulty being produced in LMXBs; (4) MSPs may still be accreting
indicating a much higher magnetic field; (5) The data that predict G for MSPs also predict ages on the order of, and greater than, ten
billion years, which is much greater than normal pulsars. If the predicted ages
are wrong, most likely the predicted G fields of MSPs are wrong;
(6) When magnetic fields are measured directly with cyclotron lines in X-ray
binaries, fields G are indicated. Other scenarios should be
investigated. One such scenario is the following. Over 85% of MSPs are
confirmed members of a binary. It is possible that all MSPs are in large
separation binaries having magnetic fields G with their magnetic
dipole emission being balanced by low level accretion from their companions.Comment: 16 pages, accept for publication in Astrophysics and Space Scienc
Modelos acoplados do IPCC-AR4 e o gradiente meridional de temperatua da superficie do mar no atlântico tropical : relaçoes com a precipitaçao no norte do nordeste do Brasil
Este artigo mostra como três modelos acoplados do Intergovernmental on Panel Climate Change - (IPCC-AR4), o FGOALS1. 0G – LASG do Institute of Atmospheric Physics of China, o GISSER da National Aeronautics Space Admnistration (NASA) e o GFDL_CM2 da National Oceanic and Atmospheric Administration (NOAA), simularam a variabilidade do gradiente meridional de Temperatura da Superfície do Mar (TSM), entre os meses de fevereiro a maio, no Atlântico Tropical (1901-1999). A precipitação durante a estação chuvosa (fevereiro a maio) no setor norte do Nordeste do Brasil (NEB) foi também analisada pelos três modelos e comparada com as observações. Os modelos GISSER e FGOALS1.0G mostraram melhor desempenho na simulação do sinal do gradiente meridional de TSM no Atlântico Tropical para o período de 1901 a 1999. Destaca-se que os modelos apresentaram um melhor desempenho na simulação da tendência decadal, conseguindo explicar entre 50% a 80% da variabilidade do gradiente, com a TSM do setor sul sendo mais bem simulada
Reduction of temporomandibular joint (TMJ) luxation in a horse - case report
ABSTRACT Luxation of the temporomandibular joint (TMJ) in horses, despite being an uncommon condition, is often associated with local trauma involving the head. Its clinical importance is mainly related to the painful injury and impairment of the multiple movements involved in chewing and breaking foods. The objective of the current work is to describe the manual reduction technique of TMJ dislocation in a 6-year-old Mangalarga Marchador stallion with a history of inability to close the oral cavity and lateral displacement of the mandible. In the radiographic and ultrasonographic evaluation of the region a rostral displacement of the mandibular condyle was observed. Manual reduction was effective with the patient under dissociative anesthesia, progressing to medical discharge within 12 days
- …