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Search Results: 1 - 10 of 221755 matches for " Marcel C.C.;Cerri "
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Análise evolutiva e perspectiva histórica da ultra-sonografia intra-operatória (USIO) nas afec??es pancreáticas
Machado, Márcio Martins;Rosa, Ana Cláudia Ferreira;Barros, Nestor de;Herman, Paulo;Pugliese, Vincenzo;Machado, Marcel C.C.;Cerri, Luciana Mendes de Oliveira;Azeredo, Letícia Martins;Cerri, Giovanni Guido;
Radiologia Brasileira , 2003, DOI: 10.1590/S0100-39842003000100010
Abstract: intraoperative ultrasonography influences surgical strategy in a significant number of patients operated due to benign or malignant conditions, and is the most sensitive technique for the detection of small lesions, particularly in the liver and in the pancreas. in pancreatic surgery, intraoperative ultrasonography is helpful in the localization of islet cell tumors and in the assessment of the resectability of adenocarcinomas. the technique may also play a role in chronic pancreatitis surgery. the authors present an up-to-date review of the evolution of intraoperative ultrasonography in pancreatic surgery.
Aspectos ultra-sonográficos da neoplasia epitelial papilífera sólido-cística do pancreas
Machado, Márcio Martins;Rosa, Ana Cláudia Ferreira;Barros, Nestor de;Machado, Marcel C.C.;Azeredo, Letícia Martins;Cerri, Luciana Mendes de Oliveira;Mota, Orlando Milhomem da;Santana Filho, Jales Benevides;Campoli, Paulo Moacir de Oliveira;Cardoso, Daniela Medeiros Milhomem;Cerri, Giovanni Guido;
Radiologia Brasileira , 2003, DOI: 10.1590/S0100-39842003000400005
Abstract: the authors report the clinical, gross pathology and ultrasonography findings of 11 prospectively studied patients with solid and papillary epithelial neoplasm of the pancreas (spen). the patients were one male and ten females aged 15 to 75 years (mean age at diagnosis: 27 years). all patients had pathology proven spen and were submitted to preoperative ultrasonography. the size, location and ultrasonographic features of the tumors were evaluated and correlated with the gross pathology findings. the mean transverse diameter of these tumors was 8.7 cm (range: 4.2 cm to 16.0 cm). tumors were located in the head (three cases), body (three cases) and tail (five cases) of the pancreas. all lesions were well encapsulated and presented some degree of internal hemorrhage. there was full correlation between ultrasonography and gross pathology findings. in three cases (27.3%) the tumors were predominantly solid, cystic in one case (9.1%), and had equal degrees of solid and cystic components in seven cases (63.6%). calcifications, predominantly peripheral, were seen in four (36.4%) of the 11 patients. all tumors were in contact with the portal, mesenteric and splenic venous axis. in all cases except one there was no venous invasion. lymph nodes or distant metastases were not observed in any of the patients. the authors concluded that in all cases there was a correlation between the ultrasonography and gross pathology findings, and although ultrasonography findings are not specific they may be highly suggestive of spen in the appropriate clinical context.
História da ultra-sonografia intra-operatória
Machado, Márcio Martins;Rosa, Ana Cláudia Ferreira;Barros, Nestor de;Pugliese, Vincenzo;Herman, Paulo;Saad, William Abr?o;Machado, Marcel C.C.;Cerri, Luciana Mendes de Oliveira;Gama-Rodrigues, Joaquim J.;Habr-Gama, Angelita;Cerri, Giovanni Guido;
Radiologia Brasileira , 2002, DOI: 10.1590/S0100-39842002000600008
Abstract: intraoperative ultrasonography was initially used after 1960. there are also few reports on initial experiences published during the 50'. this technique was firstly used to study cerebral tumors and later on it was also used to evaluate biliary and renal calculi. at that time, intraoperative ultrasonography with a-mode or nonreal-time b-mode imaging did not achieve great recognition by surgeons and clinicians. however, the efforts of the initial reports were used in the development of modern intraoperative ultrasonography using real-time b-mode imaging. the authors comment on the evolution of intraoperative ultrasonography since its birth up to date.
EFFECT OF FALLOW LAND, CULTIVATED PASTURE AND ABANDONED PASTURE ON SOIL FERTILITY IN TWO DEFORESTED AMAZONIAN REGIONS
DIEZ J.A,POLO A,DIAZ-BURGOS M.A,CERRI C.C
Scientia Agricola , 1997,
Abstract: The effect of two practices adopted by settlers (abandoned pasture and fallow land) on soil fertility of two deforested Amazonian regions (Belém-Pará and Ariquemes-Rond nia) was studied. Whenever possible, cultivated pasture, over similar time periods in both cases and in natural forest, were employed as soil fertility reference standards. Nutrient dynamics was studied using the electroultra-filtration technique. In general, deforestation, as practiced in these areas, has a degrading effect on soil fertility. The effect of burning normally leads to a pH rise caused by ash. This usually yields a favorable transitory effect, improving soil fertility conditions, however not sufficient for plant needs, as inferred from the low P and K levels. Cattle excrements, improved the K level for cultivated pastures. Qualitative differences related to N were observed between cultivated pasture and both, fallow land or abandoned pasture. In the first, a certain recovery of available N levels was detected, mainly affecting the EUF-Norg fraction. On the other hand, a regeneration of organic compounds, in the fallow land and the abandoned pasture, closely related to those existing in the natural forest, was verified. This is mainly due to the presence of a higher proportion of NO3-_N and, consequently, a EUF-Norg/EUF-NO3- ratio close to 1.
O uso do grampeador vascular nas ressec??es hepáticas
Machado, Marcel Autran C.;Herman, Paulo;Amico, Enio Campos;Makdissi, Fábio F.;Bacchella, Telesforo;Machado, Marcel C.C.;
Arquivos de Gastroenterologia , 2005, DOI: 10.1590/S0004-28032005000200008
Abstract: background: among several liver resection techniques, the use of stapler in the portal pedicles is an interesting option. aim: to describe the technique of liver resection using a vascular stapling device. patients and methods: a total of eight patients underwent hepatic resections with stapling techniques. the authors have used intrahepatic approach glissonian pedicles with the application of a vascular stapler device in all cases. liver parenchyma and hepatic veins were transected as usual. results: there were no deaths. no complications directly attributable to stapler ligations of portal pedicles were observed. conclusion: stapling techniques can be helpful in hepatic resection procedures. the vascular stapler may significantly reduce glissonian pedicle section time.
Qual o seu diagnóstico?
Machado Márcio Martins,Rosa Ana Cláudia Ferreira,Barros Nestor de,Machado Marcel C.C.
Radiologia Brasileira , 2002,
Abstract:
Aspectos ultra-sonográficos da neoplasia epitelial papilífera sólido-cística do pancreas
Machado Márcio Martins,Rosa Ana Cláudia Ferreira,Barros Nestor de,Machado Marcel C.C.
Radiologia Brasileira , 2003,
Abstract: Os autores relatam os aspectos clínicos, macroscópicos e ultra-sonográficos em 11 pacientes com neoplasia epitelial papilífera sólido-cística (NEPSC) de pancreas avaliados prospectivamente. Dez pacientes eram do sexo feminino e um era do sexo masculino, com idades entre 15 e 75 anos (média de 27 anos). Todos os pacientes tiveram diagnóstico de NEPSC de pancreas comprovado por exame histopatológico e foram submetidos a exames de ultra-sonografia no pré-operatório. Foram avaliadas as dimens es, a localiza o e os aspectos ultra-sonográficos dos tumores, realizando-se correla o com suas características macroscópicas. O diametro transverso médio das les es foi de 8,7 cm (varia o: 4,2 a 16,0 cm). Três localizavam-se na cabe a, três no corpo e cinco na cauda do pancreas. Todas as les es tinham algum grau de hemorragia intratumoral e eram bem delimitadas e encapsuladas. Em todos os casos houve correla o completa entre o aspecto macroscópico dos tumores com os achados da ultra-sonografia. Os tumores eram predominantemente sólidos em três casos (27,3%), císticos em um (9,1%) e com aspecto sólido-cístico em sete (63,6%). Foram identificadas calcifica es, predominantemente periféricas, em quatro (36,4%) dos 11 pacientes. Todos os tumores estabeleciam contato com algum segmento do eixo venoso espleno-mesentérico-portal. Em apenas um caso foi confirmada invas o vascular tumoral. N o foram identificadas metástases ganglionares ou a distancia em nenhum paciente. Os autores concluem que as características ultra-sonográficas se correlacionaram com os aspectos macroscópicos das les es em todos os casos, e que, embora n o-específicas, elas s o bastante sugestivas do diagnóstico de NEPSC se analisadas no contexto clínico apropriado.
EFFECT OF FALLOW LAND, CULTIVATED PASTURE AND ABANDONED PASTURE ON SOIL FERTILITY IN TWO DEFORESTED AMAZONIAN REGIONS
DIEZ, J.A;POLO, A;DIAZ-BURGOS, M.A;CERRI, C.C;FEIGL, B.J;PICCOLO, M.C;
Scientia Agricola , 1997, DOI: 10.1590/S0103-90161997000100007
Abstract: the effect of two practices adopted by settlers (abandoned pasture and fallow land) on soil fertility of two deforested amazonian regions (belém-pará and ariquemes-rond?nia) was studied. whenever possible, cultivated pasture, over similar time periods in both cases and in natural forest, were employed as soil fertility reference standards. nutrient dynamics was studied using the electroultra-filtration technique. in general, deforestation, as practiced in these areas, has a degrading effect on soil fertility. the effect of burning normally leads to a ph rise caused by ash. this usually yields a favorable transitory effect, improving soil fertility conditions, however not sufficient for plant needs, as inferred from the low p and k levels. cattle excrements, improved the k level for cultivated pastures. qualitative differences related to n were observed between cultivated pasture and both, fallow land or abandoned pasture. in the first, a certain recovery of available n levels was detected, mainly affecting the euf-norg fraction. on the other hand, a regeneration of organic compounds, in the fallow land and the abandoned pasture, closely related to those existing in the natural forest, was verified. this is mainly due to the presence of a higher proportion of no3-_n and, consequently, a euf-norg/euf-no3- ratio close to 1.
An Overview of Human Rights, Good Governance and Development
C.C Nwufo
African Research Review , 2010,
Abstract: The human rights issues have continue to generate both interest and controversy in the world. This is because more than before the organized world community has placed considerable emphasis on human rights violation especially in developing world. This study focuses on the issue of evolution of human rights, then goes on to address the problems of human rights violations and the impact on good governance. The paper also addresses the economic and social effect of such human rights violations on national development as well as the effect of using communication to solve the problem of human rights violations and corruption.
Thermal Vibration of Magnetostrictive Material in Laminated Plates by the GDQ Method
C.C. Hong
The Open Mechanics Journal , 2007, DOI: 10.2174/1874158400701010029]
Abstract: The study of magnetostrictive material in laminated plate under thermal vibration is calculated by using the generalized differential quadrature (GDQ) method. The YNS shear deformation effect is included in the time dependent of displacement field. In the thermoelastic stress-strain relations that containing the linear temperature rise and the magnetostrictive coupling terms with velocity feedback control. We use the GDQ method to normalize and discrete the dynamic differential equations in terms of displacements and shear rotations into the form of dynamic discretized equations. Four edges of rectangular laminate with simply supported boundary conditions are considered. The time responses of thermal stresses and center displacement with and without velocity control are obtained.
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