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Search Results: 1 - 10 of 676772 matches for " R.M.C.;Souza "
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Serum concentrations of creatine kinase and of triglycerides during lactation in gilts bred older and in multiparous sows fed ad libitum
Nogueira, R.H.G.;Guedes, R.M.C.;Souza, J.C.A.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2000, DOI: 10.1590/S0102-09352000000100015
Abstract: the aim of this paper was to assess the possible variation in blood concentrations of creatine kinase (ck) and triglycerides in gilts bred older in comparison with multiparous sows. ten primiparous and ten camborough multiparous sows from the fourth to seventh parities were used. breeding age and weight of gilts averaged respectively 231 days and 149.5kg. all females were moved into individual farrowing crates and were managed under the same conditions. blood samples were collected by puncturing the coccygeal artery on day 7 before expected farrowing, and on days 2, 7, 14, 21 of lactation and 2 days after weaning. no difference in triglycerides and ck serum concentrations between groups were observed. the ck levels were low before farrowing, increased substantially on days 2 and 7 and decreased toward the end of lactation. the concentrations of triglycerides were slightly high before the parturition, diminished on days 2, 7, 14 and 21 and increased after weaning.
Serum concentrations of creatine kinase and of triglycerides during lactation in gilts bred older and in multiparous sows fed ad libitum
Nogueira R.H.G.,Guedes R.M.C.,Souza J.C.A.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2000,
Abstract: The aim of this paper was to assess the possible variation in blood concentrations of creatine kinase (CK) and triglycerides in gilts bred older in comparison with multiparous sows. Ten primiparous and ten Camborough multiparous sows from the fourth to seventh parities were used. Breeding age and weight of gilts averaged respectively 231 days and 149.5kg. All females were moved into individual farrowing crates and were managed under the same conditions. Blood samples were collected by puncturing the coccygeal artery on day 7 before expected farrowing, and on days 2, 7, 14, 21 of lactation and 2 days after weaning. No difference in triglycerides and CK serum concentrations between groups were observed. The CK levels were low before farrowing, increased substantially on days 2 and 7 and decreased toward the end of lactation. The concentrations of triglycerides were slightly high before the parturition, diminished on days 2, 7, 14 and 21 and increased after weaning.
Hepatic cirrhosis in a red-foot tortoise (Geochelone carbonaria): a case report
Guedes, R.M.C.;Lavalle, G.E.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2004, DOI: 10.1590/S0102-09352004000100020
Abstract: um jabuti (geochelone carbonaria) de 30 anos de idade foi encaminhado ao setor de patologia para exame post mortem. à necropsia, foi observada ascite acentuada. o fígado apresentava-se diminuído de volume e com vários nódulos firmes entre 0.3 e 1.0 cm de diametro distribuídos por todo o órg?o. à microscopia, esses nódulos eram constituídos externamente por espessa camada de tecido conjuntivo fibroso envolvendo hepatócitos dilatados e vacuolizados na sua por??o central. a cirrose conseqüente à lipidose hepática foi provavelmente causada por níveis baixos de proteína na dieta.
Presurgical ketoprofen, but not morphine, dipyrone, diclofenac or tenoxicam, preempts post-incisional mechanical allodynia in rats
Prado, W.A.;Pontes, R.M.C.;
Brazilian Journal of Medical and Biological Research , 2002, DOI: 10.1590/S0100-879X2002000100016
Abstract: the treatment of pain before it initiates may prevent the persistent pain-induced changes in the central nervous system that amplify pain long after the initial stimulus. the effects of pre- or postoperative intraperitoneal administration of morphine (2 to 8 mg/kg), dipyrone (40 and 80 mg/kg), diclofenac (2 to 8 mg/kg), ketoprofen (10 and 20 mg/kg), and tenoxicam (10 and 20 mg/kg) were studied in a rat model of post-incisional pain. groups of 5 to 8 male wistar rats (140-160 g) were used to test each drug dose. an incision was made on the plantar surface of a hind paw and the changes in the withdrawal threshold to mechanical stimulation were evaluated with von frey filaments at 1, 2, 6 and 24 h after the surgery. tenoxicam was given 12 or 6 h preoperatively, whereas the remaining drugs were given 2 h or 30 min preoperatively. postoperative drugs were all given 5 min after surgery. no drug abolished allodynia when injected before or after surgery, but thresholds were significantly higher than in control during up to 2 h following ketoprofen, 6 h following diclofenac, and 24 h following morphine, dipyrone or tenoxicam when drugs were injected postoperatively. significant differences between pre- and postoperative treatments were obtained only with ketoprofen administered 30 min before surgery. preoperative (2 h) intraplantar, but not intrathecal, ketoprofen reduced the post-incisional pain for up to 24 h after surgery. it is concluded that stimuli generated in the inflamed tissue, rather than changes in the central nervous system are relevant for the persistence of pain in the model of post-incisional pain.
Presurgical ketoprofen, but not morphine, dipyrone, diclofenac or tenoxicam, preempts post-incisional mechanical allodynia in rats
Prado W.A.,Pontes R.M.C.
Brazilian Journal of Medical and Biological Research , 2002,
Abstract: The treatment of pain before it initiates may prevent the persistent pain-induced changes in the central nervous system that amplify pain long after the initial stimulus. The effects of pre- or postoperative intraperitoneal administration of morphine (2 to 8 mg/kg), dipyrone (40 and 80 mg/kg), diclofenac (2 to 8 mg/kg), ketoprofen (10 and 20 mg/kg), and tenoxicam (10 and 20 mg/kg) were studied in a rat model of post-incisional pain. Groups of 5 to 8 male Wistar rats (140-160 g) were used to test each drug dose. An incision was made on the plantar surface of a hind paw and the changes in the withdrawal threshold to mechanical stimulation were evaluated with Von Frey filaments at 1, 2, 6 and 24 h after the surgery. Tenoxicam was given 12 or 6 h preoperatively, whereas the remaining drugs were given 2 h or 30 min preoperatively. Postoperative drugs were all given 5 min after surgery. No drug abolished allodynia when injected before or after surgery, but thresholds were significantly higher than in control during up to 2 h following ketoprofen, 6 h following diclofenac, and 24 h following morphine, dipyrone or tenoxicam when drugs were injected postoperatively. Significant differences between pre- and postoperative treatments were obtained only with ketoprofen administered 30 min before surgery. Preoperative (2 h) intraplantar, but not intrathecal, ketoprofen reduced the post-incisional pain for up to 24 h after surgery. It is concluded that stimuli generated in the inflamed tissue, rather than changes in the central nervous system are relevant for the persistence of pain in the model of post-incisional pain.
Prevalência de mineraliza??o aórtica detectada no abate de bovinos no estado de Minas Gerais, Brasil
Silva, M.X.S.;Guedes, R.M.C.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2007, DOI: 10.1590/S0102-09352007000300002
Abstract: this study describes the prevalence of aortic mineralization in slaughtered bovine in the state of minas gerais. fragments of thoracic aorta from 783 animals from different origin, breed, gender and age were evaluated macroscopically. all lesions were characterized and divided in, grade i, grade ii, grade iii and grade iv, depending on the severity of the lesions. a total of 298 (38.1%) aortas had lesions, as follow: 180 grade i (23.0%), 59 grade ii (7.5%), 35 grade iii (4.5%) and 24 grade iv (3.1%). differences concerning age, breed and sex were observed. females and castrated males (54.6% and 50.7%, p<0.00001 and p<0.0001, respectively) compared to intact males, zebu-crossbred and mixed bred (59.3% and 47.8%, p<0.02 and p<0.05, respectively) compared to pure zebu (37,4%) and animals older then 3 years (59.4%, p<0.0001) compared to animals 2-3 years or under 2 years of age (21.7% and 13.9%, respectively) were more frequently affected by aortic mineralization.
Stretched exponential relaxation and independent relaxation modes
Almeida, R.M.C. de;Lemke, N.;Campbell, I.A.;
Brazilian Journal of Physics , 2000, DOI: 10.1590/S0103-97332000000400012
Abstract: we discuss the origin of stretched exponential relaxation in disordered ising spin systems by writing the master equation on the phase space, and the evolution of local and global spin autocorrelation functions, in terms of independent relaxation modes, which are eigenvectors of the time evolution operator. in this sense it is shown that when the relaxation modes are spatially delocalized, both local and global autocorrelation functions may present non-exponential relaxation. we also analyze results for random walks on the dilute hypercube, which may be associated with the phase space of a disordered ising spin system. as expected, the results show a stretched exponential relaxation near the percolation transition, since it deals with random walks on a fractal percolating cluster defined on a closed surface. we argue that the same type of topology is present in the available region of configuration space in ising spin-glass systems near the glass transition, since these systems present very similar relaxation patterns in this temperature range.
The effects of organic and conventional management practices on feeding activity of soil organisms in vineyards
A.J. Reinecke,R.M.C. Albertus,S.A. Reinecke,O. Larink
African Zoology , 2011,
Abstract: This study investigated whether the activity of soil organisms in a vineyard soil in theWestern Cape, South Africa, was affected differently by different management practices. The influences of organic and conventional treatments were compared in two vineyard blocks, one previously organically and the other conventionally managed. In each block, experimental plots received either full chemical weed control or ‘organic’ treatment, as recommended by the Organic Standards of the British Soil Association. Pest and disease control practices followed in the conventionally treated vineyard block included the use of various pesticides. The bait-lamina test was used to assess feeding activity of soil organisms. The feeding activity in the previously organically managed block, subsequently receiving conventional surface chemical treatment, decreased over time as the soil moisture content decreased. A comparison of feeding activity and moisture content on the previously organically managed block after both types of treatments, indicated that the activity was substantially higher in the organically treated plots compared to the conventionally treated ones, while the soil moisture contents were very similar. This indicated that the organic treatment favoured soil biological activity directly or indirectly. The treatment contributed to the preservation of more favourable moisture conditions for soil biological activity. A microcosm study to determine feeding activity of fauna in soil from both vineyard blocks, each subjected to both a conventional and organic treatment under controlled conditions in the laboratory, showed a statistically significantly (P < 0.05) higher feeding activity in the soil that was organically treated and provided further indications that organic management practices, as used here, may result in higher soil faunal feeding activity over the short term compared to conventional practices.
Stretched exponential relaxation and independent relaxation modes
Almeida R.M.C. de,Lemke N.,Campbell I.A.
Brazilian Journal of Physics , 2000,
Abstract: We discuss the origin of stretched exponential relaxation in disordered Ising spin systems by writing the master equation on the phase space, and the evolution of local and global spin autocorrelation functions, in terms of independent relaxation modes, which are eigenvectors of the time evolution operator. In this sense it is shown that when the relaxation modes are spatially delocalized, both local and global autocorrelation functions may present non-exponential relaxation. We also analyze results for random walks on the dilute hypercube, which may be associated with the phase space of a disordered Ising spin system. As expected, the results show a stretched exponential relaxation near the percolation transition, since it deals with random walks on a fractal percolating cluster defined on a closed surface. We argue that the same type of topology is present in the available region of configuration space in Ising spin-glass systems near the glass transition, since these systems present very similar relaxation patterns in this temperature range.
结构振动对湍流近尾迹的影响
刘明侯,Zhou,Y,陈义良,So,R.M.C.
力学学报 , 2001, DOI: 10.6052/0459-1879-2001-2-1999-147
Abstract:
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