Bone Marrow Stem Cell Treatment for Ischemic Heart Disease in Patients with No Option of Revascularization: A Systematic Review and Meta-Analysis

PMCID: PMC3686792This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

Polyphasic characterization of gluconacetobacter diazotrophicus isolates obtained from different sugarcane varieties

Parceria: UFRJ; UFRRJ; UENF

Serviços ambientais e produtos de sistemas agroflorestais e da vegetação secundária no processo de recuperação de áreas degradadas na Amazônia Central.

Neste trabalho, levantou-se a hipótese de que sistemas agroflorestais (SAF) implantados em áreas de pastagens degradadas, devido a diversidade, a presença de árvores em diversos estratos aéreos e subterrâneos, o uso de leguminosas para adubo verde e de práticas otimizadoras da eficiência da captura de água, luz e nutrientes, poderiam fornecer mais produtos e maiores serviços ambientais do que a regeneração natural proporciona

Sistemas agroflorestais no contexto do processo da transição agroecológica.

Os sistemas agroflorestais são experiências locais que podem validar os princípios e enriquecer a própria concepção teórica de agroecologia. O resgate destas práticas tradicionais baseada na agrobiodiversidade, aliado ao conhecimento cientifico, estão sendo sistematizados para apoiar o processo de transição agroecológica. Foram implantados e avaliados quatro arranjos agroflorestais, em três condições de áreas de pastagens abandonadas, no Campo Experimental da Embrapa Amazônia Ocidental

Potencialidades do ingazeiro (Inga edulis Mart.) e da gliricidia (Gliricida sepium (Jacq.) Kunth ex Walp.) como adubos verdes em agroecossistemas.

Considerando a necessidade de tecnologias para promover a transição agroecológica, este trabalho teve como objetivo avaliar o potencial do ingazeiro e da gliricídia, como plantas para adubação verde em agroecossistemas na Amazônia

Design, Production and First Commissioning Results of the Electrical Feedboxes of the LHC

A total of 44 CERN designed cryogenic electrical feedboxes are needed to power the LHC superconducting magnets. The feedboxes include more than 1000 superconducting circuits fed by high temperature superconductor and conventional current leads ranging from 120 A to 13 kA. In addition to providing the electrical current to the superconducting circuits, they also ensure specific mechanical and cryogenic functions for the LHC. The paper focuses on the main design aspects and related production operations and gives an overview of specific technologies employed. Results of the commissioning of the feedboxes of the first LHC sectors are presented

Velocity asymmetries in YSO jets: Intrinsic and extrinsic mechanisms

It is a well established fact that some YSO jets (e.g. RW Aur) display different propagation speeds between their blue and red shifted parts, a feature possibly associated with the central engine or the environment in which the jet propagates. In order to understand the origin of asymmetric YSO jet velocities, we investigate the efficiency of two candidate mechanisms, one based on the intrinsic properties of the system and one based on the role of the external medium. In particular, a parallel or anti-parallel configuration between the protostellar magnetosphere and the disk magnetic field is considered and the resulting dynamics are examined both in an ideal and a resistive magneto-hydrodynamical (MHD) regime. Moreover, we explore the effects of a potential difference in the pressure of the environment, as a consequence of the non-uniform density distribution of molecular clouds. Ideal and resistive axisymmetric numerical simulations are carried out for a variety of models, all of which are based on a combination of two analytical solutions, a disk wind and a stellar outflow. We find that jet velocity asymmetries can indeed occur both when multipolar magnetic moments are present in the star-disk system as well as when non-uniform environments are considered. The latter case is an external mechanism that can easily explain the large time scale of the phenomenon, whereas the former one naturally relates it to the YSO intrinsic properties. [abridged]Comment: accepted for publication in A&