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Helio Zylberstain 한국고용노사관계학회 2006 産業關係硏究 Vol.16 No.2
This text describes the elements of the reform of labor legislation that President Lula submitted to the Brazilian Congress. Before examining the project, the author offers a brief description of the principal characteristics of the Brazilian system of labor relations: labor unions and their funding, employers associations, collective bargaining, mechanisms for solving conflicts, strikes and the role of the government. The text then examines the principal aspects of Lulas proposal, highlighting its two concepts of representativeness (proven and derived) and the funding mechanism for unions. The author seeks to show that the proposed reform should strengthen the union peak organizations, , centralize negotiations and introduce the Brazilian unions into the workplace. Finally, the author evaluates the likelihood of approval by Congress, concluding that it is not very great. The conclusion is that even if it is not examined and approved, Lulas project will mark the future debate on labor reform in Brazil.
Helio Zylberstajn 한국고용노사관계학회 2006 産業關係硏究 Vol.16 No.2
This text describes the elements of the reform of labor legislation that President Lula submitted to the Brazilian Congress. Before examining the project, the author offers a brief description of the principal characteristics of the Brazilian system of labor relations: labor unions and their funding, employers’ associations, collective bargaining, mechanisms for solving conflicts, strikes and the role of the government. The text then examines the principal aspects of Lula’s proposal, highlighting its two concepts of representativeness (proven and derived) and the funding mechanism for unions. The author seeks to show that the proposed reform should strengthen the union peak organizations, , centralize negotiations and introduce the Brazilian unions into the workplace. Finally, the author evaluates the likelihood of approval by Congress, concluding that it is not very great. The conclusion is that even if it is not examined and approved, Lula’s project will mark the future debate on labor reform in Brazil.
Kim, Bong Chul,Bertin, Helios,Kim, Hak-Jin,Kang, Sang-Hoon,Mercier, Jacques,Perrin, Jean-Philippe,Corre, Pierre,Lee, Sang-Hwy Elsevier 2018 Journal of cranio-maxillofacial surgery Vol.46 No.11
<P><B>Abstract</B></P> <P><B>Purpose</B></P> <P>The goal of this study was to understand the three-dimensional (3D) structural characteristics of hemifacial microsomia (HFM) mandible in terms of skeletal units, especially to locate the underdeveloped skeletal regions for treatment. Another goal was to compare the HFM structure of different age groups to understand growth potential relevant to treatment scheduling.</P> <P><B>Materials and methods</B></P> <P>We reconstructed 3D mandibles from computed tomographic images of French and Korean patients with HFM (N = 28; group II) and normal subjects (N = 27; group I). Each mandible was classified by Pruzansky's HFM types I, II and III, and by age group (child, adolescent, and adult). The mandible was divided into skeletal units, and geometrical representation by skeletal unit line was performed, including the condylar, body, coronoid, and angular units. Their length and angulations were measured and statistically analyzed.</P> <P><B>Results</B></P> <P>The results showed that the affected condylar unit in type II HFM and the condylar/coronoid unit in type III were smaller in young age groups than were other units. The angulation between the skeletal units in type II, though not type III, tended toward normalcy with age, but not to the normal degree of angulations in group I.</P> <P><B>Conclusion</B></P> <P>Our study shows the major involvement of condylar unit and minor involvement of body unit for HFM, improving with age in type II. The mandibular skeletal unit analysis seems to be a useful tool for individualized diagnosis, allowing identification of the major etiopathogenic area and treatment planning, including a simulation to set up a regimen for successful reconstruction of HFM.</P>
Gleidson Benevides de Oliveira,Helio Noberto de Araújo Júnior,Carlos Eduardo Bezerra de Moura,Phelipe Oliveira Favaron,Alexsandra Fernandes Pereira,Moacir Franco de Oliveira 대한수의학회 2023 Journal of Veterinary Science Vol.24 No.5
Background: Hystricomorpha rodents display a similar placentation model to humans. The present study was carried out considering the scarcity of information concerning the placental development in agouti. Objective: Describe the microscopy of the placenta, subplacenta and yolk sac of agoutis in early pregnancy and report on the inversion of the yolk sac. Methods: Fifteen females between the 14th–32nd day of gestation were used following euthanasia. Gestational buttons were collected, fixed, processed, stained to optical microscopy or immunohistochemistry. Results: Chorioallantoic placenta (CP) ranged from conical to a half-sphere, as follows: from the 14th to 17th day, the CP displays an inverted “V” shape, predominantly formed by cytotrophoblasts; from 20 to 22 days, formed almost entirely by cytotrophoblasts; at 28 days, a half sphere, with distinct lobes and interlobular area, numerous maternal gaps delimited by syncytiotrophoblasts and trophoblast giant cells; at 32 days, globose and undergoing the maturation process. Subplacenta, located between decidua and CP, initially presents septa consisting of simple columnar epithelium and after 17 days, comprising stratified epithelium. Visceral yolk sac (VYS) is attached to two CP projections between 14 and 17 days, formed by a simple cubic epithelium and inverted. Between 20 and 22 days, the epithelium displays apical villous projections with cytoplasmic vacuoles and a vascularized mesoderm. After the 24th day, the VYS near the placenta is pleated, very vascularized and villous, with decreased villi sizes further away from the placenta. Conclusion: The agouti CP displays similar characteristics to other hystricomorpha, including placenta lobulation, a subplacenta and an inverted vitelline placenta.
Aristizabal-Pachon, Andres Felipe,Carvalho, Thais Inacio,Carrara, Helio Humberto,Andrade, Jurandyr,Takahashi, Catarina Satie Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.16
Background: The Wnt/${\beta}$-catenin signaling pathway is an important regulator of cellular functions such as proliferation, survival and cell adhesion. Wnt/${\beta}$-catenin signaling is associated with tumor initiation and progression; ${\beta}$-catenin mutations explain only 30% of aberrant signaling found in breast cancer, indicating that other components and/or regulation of the Wnt/${\beta}$-catenin pathway may be involved. Objective: We evaluated AXIN2 rs2240308 and rs151279728 polymorphisms, and expression profiles of ${\beta}$-catenin destruction complex genes in breast cancer patients. Materials and Methods: We collected peripheral blood samples from 102 breast cancer and 102 healthy subjects. The identification of the genetic variation was performed using PCR-RFLPs and DNA sequencing. RT-qPCR was used to determine expression profiles. Results: We found significant association of AXIN2 rs151279728 and rs2240308 polymorphisms with breast cancer risk. Significant increase was observed in AXIN2 level expression in breast cancer patients. Further analyses showed APC, ${\beta}$-catenin, CK1${\alpha}$, GSK3${\beta}$ and PP2A gene expression to be associated to clinic-pathological characteristics. Conclusions: The present study demonstrated, for the first time, that AXIN2 genetic defects and disturbance of ${\beta}$-catenin destruction complex expression may be found in breast cancer patients, providing additional support for roles of Wnt/${\beta}$-catenin pathway dysfunction in breast cancer tumorigenesis. However, the functional consequences of the genetic alterations remain to be determined.
( Daniel Balbachevsky ),( Robinson Esteves Pires ),( Rodrigo Guerra Sabongi ),( Theophilo Asfora Lins ),( Geiser De Souza Carvalho ),( Helio Jorge Alvachian Fernandes ),( Fernando Baldy Dos Reis ) 대한외상학회 2019 大韓外傷學會誌 Vol.32 No.1
Unstable pelvic ring lesions are usually treated with internal fixation. In patients presenting clinical instability or soft tissue complication risk, external fixation is a safe treatment option. However, pin tract infection, insufficient biomechanical properties, difficulty sitting and changing decubitus are important drawbacks related to the treatment. The present study reports the association of anterior and posterior subcutaneous internal fixation by applying spine-designed implants on the pelvic ring disruption: supra- acetabular pedicle screws with an interconnecting rod (Infix), plus posterior transiliac fixation with the same system, which the authors have named the “Hula Hoop Technique”.
Numerical simulation of non-isothermal flow in oil reservoirs using a two-equation model
dos Santos Heringer, Juan Diego,de Souza Debossam, Joao Gabriel,de Souza, Grazione,Souto, Helio Pedro Amaral Techno-Press 2019 Coupled systems mechanics Vol.8 No.2
This work aims to simulate three-dimensional heavy oil flow in a reservoir with heater-wells. Mass, momentum and energy balances, as well as correlations for rock and fluid properties, are used to obtain non-linear partial differential equations for the fluid pressure and temperature, and for the rock temperature. Heat transfer is simulated using a two-equation model that is more appropriate when fluid and rock have very different thermal properties, and we also perform comparisons between one- and two-equation models. The governing equations are discretized using the Finite Volume Method. For the numerical solution, we apply a linearization and an operator splitting. As a consequence, three algebraic subsystems of linearized equations are solved using the Conjugate Gradient Method. The results obtained show the suitability of the numerical method and the technical feasibility of heating the reservoir with static equipment.
Numerical simulation of single-phase two-components flow in naturally fractured oil reservoirs
Debossam, Joao Gabriel Souza,dos Santos Heringer, Juan Diego,de Souza, Grazione,Souto, Helio Pedro Amaral Techno-Press 2019 Coupled systems mechanics Vol.8 No.2
The main goal of this work is to develop a numerical simulator to study an isothermal single-phase two-component flow in a naturally fractured oil reservoir, taking into account advection and diffusion effects. We use the Peng-Robinson equation of state with a volume translation to evaluate the properties of the components, and the discretization of the governing partial differential equations is carried out using the Finite Difference Method, along with implicit and first-order upwind schemes. This process leads to a coupled non-linear algebraic system for the unknowns pressure and molar fractions. After a linearization and the use of an operator splitting, the Conjugate Gradient and Bi-conjugated Gradient Stabilized methods are then used to solve two algebraic subsystems, one for the pressure and another for the molar fraction. We studied the effects of fractures in both the flow field and mass transport, as well as in computing time, and the results show that the fractures affect, as expected, the flow creating a thin preferential path for the mass transport.
Spectro-photometric distances to stars: A general purpose Bayesian approach
Santiago, Basí,lio X.,Brauer, Dorothé,e E.,Anders, Friedrich,Chiappini, Cristina,Queiroz, Anna B.,Girardi, Lé,o,Rocha-Pinto, Helio J.,Balbinot, Eduardo,da Costa, Luiz N.,Maia, Marcio EDP Sciences 2016 Astronomy and astrophysics Vol.585 No.-