Ring Compression
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Efficacy and safety of a NiTi CAR 27 compression ring for end-to-end anastomosis compared with conventional staplers: A real-world analysis in Chinese colorectal cancer patients
OBJECTIVES: This study aimed to evaluate the safety and efficacy of a new nickel-titanium shape memory alloy compression anastomosis ring, NiTi CAR 27, in constructing an anastomosis for colorectal cancer resection compared with conventional staples. METHODS: In total, 234 consecutive patients diagnosed with colorectal cancer receiving sigmoidectomy and an
Clinics. Publicado em: 2016-05
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2. Microextrusão de peças aplicadas a materiais ferrosos e não ferrosos
This thesis presents the study about microforming, in this case microextrusion of the four different materials, an SAE 1020 steel, an AISI 304 stainless steel, an AA6531 aluminum and a C34000 brass. To evaluate the size effect about microextrusion process, two sizes of specimens were used, with a ¿ 4 mm and another with ¿ 1 mm. For each size of specimen, t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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3. Análise da influência de parâmetros do processo de trefilação de barras cilíndricas de aço AISI 1045 via simulação numérica computacional / Title: parameters analysis of the drawing of AISI 1045 steel rods via FEM
This paper aims to analyze the drawing process using simulation and evaluate the influence of process variables such as lubricant (friction coefficient) and angle of die as well as verify the effectiveness of simulation to preview the drawing force, temperature and residual stresses. Experimental work was carried out involving the determination of friction c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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4. Determinação do coeficiente de atrito para as ligas de alumínio AA6351e e de titânio Ti6Al4V pelos métodos do anel e tubo cônico
O presente trabalho apresenta um breve apanhado do processo de forjamento, resultados da investigação experimental e da análise computacional acerca do teste de compressão do anel e ensaio do tubo cônico, ambos visando a determinação do coeficiente de atrito existente na região de contato entre as matrizes e os corpos-de-prova, para as ligas de alum�
Publicado em: 2011
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5. Skeletal and chlorine effects on 13C-NMR chemical shifts of chlorinated polycyclic systems
Com o objetivo de realizar uma análise comparativa do efeito de compressão anelar e do Cl no deslocamento químico dos carbonos clorados tencionados, foram analisados os deslocamentos químicos de 27 estruturas policíclicas cloradas e não cloradas derivadas dos inseticidas “aldrin” (5) e “isodrin” (14). Os compostos foram divididos em quatro grup
Publicado em: 2010
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6. Previsão das propriedades físicas do papel kraft por espectroscopia no infravermelho próximo (NIR) e regressão por mínimos quadrados parciais (PLS)
The main objective of the present work is represented by the characterization of the physical properties of industrial kraft paper (i.e. transversal and longitudinal tear resistance, transversal traction resistance, bursting or crack resistance, longitudinal and transversal compression resistance (SCT (Compressive Strength Tester) and compression resistance
Química Nova. Publicado em: 2009
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7. Estudo do fenômeno da auto-intersecção em um anel anisotrópico / Study of the self-intersection anomaly in an anisotropic ring
This work concerns a numerical study of a homogeneous circular plate with a centered hole that is under a state of plane strain. The plate is fixed at its inner surface and is under uniform radial compression at its outer surface. The plate is linear, elastic, and anisotropic. An analytical solution for this problem, which satisfies the governing equations o
Publicado em: 2008
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8. Projeto, ConstruÃÃo e ValidaÃÃo de um Sistema de CompressÃo Uniaxial para Estimativa da CompactaÃÃo do Solo
The compaction of the agricultural soils has worldwide importance because of the increasing of the farm with machinery resulting in the increasing of heavy machines for cultivation system, mainly, in the developed countries. The term, soils compaction refers to the compression carried out on the non-saturated soil, during which an increase of bulk density ex
Publicado em: 2005
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9. Evaluation of two commercially-available lubricants by means of ring test to AA 6061 F aluminum alloys
This paper shows friction results obtained through compression ring tests for two commercially-available lubricants (i.e., Oildag and Deltaforge) applied in the hot forging of aluminum alloys. The experiments were performed with AA 6061 F aluminum alloy samples with the goal of observing the behavior of each lubricant in several conditions of temperature (20
Materials Research. Publicado em: 2003-12
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10. Application of the finite element method in cold forging processes
The demand for more efficient manufacturing processes has been increasing in the last few years. The cold forging process is presented as a possible solution, because it allows the production of parts with a good surface finish and with good mechanical properties. Nevertheless, the cold forming sequence design is very empirical and it is based on the designe
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000
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11. Effects of the Indole-3-Acetic Acid (IAA) Transport Inhibitors N-1-Naphthylphthalamic Acid and Morphactin on Endogenous IAA Dynamics in Relation to Compression Wood Formation in 1-Year-Old Pinus sylvestris (L.) Shoots.
Both N-1-naphthylphthalamic acid (NPA) and methyl-2-chloro-9-hydroxyfluorene-9-carboxylic acid (CF) inhibit the polar transport of indole-3-acetic acid (IAA) and, therefore, are attractive tools for investigating IAA's role in the regulation of plant growth. Ringing an intact conifer shoot with lanolin containing NPA or CF induces the formation of compressio
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12. Case Report: Locked Pubic Symphysis: An Open Reduction Technique
A locked pubic symphysis occasionally occurs after a lateral compression injury of the pelvic ring. One pubic bone becomes entrapped behind the contralateral pubis. Lateral compression pelvic injuries are well recognized, but a lateral compression pelvic injury resulting in a locked pubic symphysis is rare. We describe a locked pubic symphysis with greater t
Springer-Verlag.