Direito à memória e à verdade : seminário

Seminário realizado pela Comissão de Direitos Humanos e Minorias da Câmara dos Deputados em 2009. As atividades foram dividido em 4 mesas: a primeira Da Comissão sobre Mortos e Desaparecidos Políticos a uma nova Comissão Memória e Verdade, nos moldes propostos pela ONU, teve como finalidade ouvir e debater as avaliações e as propostas de equacionamento de questões não resolvidas no período da ditadura militar; na segunda mesa foram apresentadas as recomendações elaboradas pelo Ministério Público Federal a partir da análise do livro Orvil, O Livro Negro do Terrorismo no Brasil, escrito por ordem do Ministro do Exército em 1986; na terceira mesa foram analisadas as revelações feitas por um agente secreto da ditadura militar, contidas no livro Sem Vestígios, de autoria de Taís Morais; a quarta mesa tratou do tema Tortura - crime imprescritível: estudo sobre a prática no Brasil durante o período 1964-1985.

Mudanças climáticas: impactos físicos e socioeconômicos

Analisa os impactos econômicos, sociais e ecológicos decorrentes das alterações climáticas.

冻结型和电阻型无力场

本文在限制条件下,对固定空间磁能进行变分,发现无力因子a为常数表征无力场的最小磁能状态,代表稳定的无力场。其物理意义为气体漂移速度场是定常的,磁场形态不变,磁场强度受电阻衰变的影响,也因为流体运动而受到波因亭能流的影响。有效电场垂直于磁场。在另一限制件: 下,对给定空间内欧姆损失进行变分,发现a为常数也表征无力场的最小欧姆损失状态,它的物理量是最小磁能状态无力因子a为零,或的特殊情况。

Basic equations for suspension flows with interphase mass-transfer

In the case of suspension flows, the rate of interphase momentum transfer M(k) and that of interphase energy transfer E(k), which were expressed as a sum of infinite discontinuities by Ishii, have been reduced to the sum of several terms which have concise physical significance. M(k) is composed of the following terms: (i) the momentum carried by the interphase mass transfer; (ii) the interphase drag force due to the relative motion between phases; (iii) the interphase force produced by the concentration gradient of the dispersed phase in a pressure field. And E(k) is composed of the following four terms, that is, the energy carried by the interphase mass transfer, the work produced by the interphase forces of the second and third parts above, and the heat transfer between phases. It is concluded from the results that (i) the term, (-alpha-k-nabla-p), which is related to the pressure gradient in the momentum equation, can be derived from the basic conservation laws without introducing the "shared-pressure presumption"; (ii) the mean velocity of the action point of the interphase drag is the mean velocity of the interface displacement, upsilonBAR-i. It is approximately equal to the mean velocity of the dispersed phase, upsilonBAR-d. Hence the work terms produced by the drag forces are f(dc) . upsilonBAR-d, and f(cd) . upsilonBAR-d, respectively, with upsilonBAR-i not being replaced by the mean velocity of the continuous phase, upsilonBAR-c; (iii) by analogy, the terms of the momentum transfer due to phase change are upsilonBAR-d-GAMMA-c, and upsilonBAR-d-GAMMA-d, respectively; (iv) since the transformation between explicit heat and latent heat occurs in the process of phase change, the algebraic sum of the heat transfer between phases is not equal to zero. Q(ic) and Q(id) are composed of the explicit heat and latent heat, so that the sum Q(ic) + Q(id)) is equal to zero.

The induction plasma chemical reactor: Part II. Kinetic model

A kinetic model has been developed for the prediction of the concentration gelds in an rf plasma reactor. A sample calculation for a SiCl4/H2 system is then performed. The model considers the mixing processes along with the kinetics of seven reactions involving the decomposition of these reactants. The results obtained are compared to those assuming chemical equilibrium. The predictions indicate that an equilibrium assumption will result in lower predicted temperature fields in the reactor. Furthermore, for the chemical system considered here, while differences exist between the concentration fields obtained by the two models, the differences are not substantial.

爆炸技术与低渗透油气藏增产

爆炸技术引入石油行业已有一百多年的历史,大规模的工业应用也有二三十年的历史,在低渗透油藏的增产方面,涉及到了射孔、高能气体压裂等多个领域。总结了井内爆炸技术、核爆炸技术、高能气体压裂、爆炸松动、复合射孔、复合压裂以及水力裂缝"层内爆炸"采油技术对低渗透油藏进行改造的研究进展,同时对利用爆炸技术,尤其是水力裂缝层内爆炸采油技术对低渗透油藏进行改造的研究做了展望,并提出了利用射孔、高能气体压裂、"层内"爆炸技术的联合作业是低渗透油藏改造技术的最优方案之一。

New species of fishes from Panama

The fishes described in the following pages were collected by the authors in the fresh waters of Panama, while engaged in field work on the Biological Survey of the Canal Zone; the ichthyological work of which is being conducted cooperatively by the Smithsonian Institution, the Field Museum of Natural History and the Bureau of Fisheries. A complete account of all the fishes collected during the past two years on this survey is in the course of preparation. (Document contains 16 pages)

Evaluation of wheat or corn dried distillers' grains with solubles on performance and carcass characteristics of feedlot steers

[EN]A study was conducted on crossbred steers (n=275; 376±924 kg) to evaluate performance and carcass quality of cattle fed wheat or corn dried distillers’ grains with solubles (DDGS). The control ration contained 86.6% rolled barley grain, 5.7% supplement and 7.7% barley silage (DM basis). The four treatments included replacement of barley grain at 20 or 40% of the diet (DM basis) with wheat or corn DDGS. Steers were slaughtered at a common end weight of 645 kg with 100 steers randomly (n=20 per treatment) selected for determination of the retail yield of sub-primal boneless boxed beef (SPBBB). Data were analyzed as a completely randomized design using pen as the experimental unit. Feeding increasing levels of wheat DDGS led to a quadratic increase in dry matter intake (DMI) (P<0.01), whereas increasing levels of corn DDGS led to a quadratic decrease in DMI (P=0.01). Average daily gain was not influenced (P=0.13) by feeding wheat or corn DDGS, but cattle fed corn DDGS exhibited a quadratic increase (P=0.01) in gain:feed. As a result, a quadratic increase (P<0.01) in calculated NEg of the diet was observed as corn DDGS levels increased. A linear decrease (P=0.04) in days on feed (169, 166 and 154 d) was noted when increasing levels of wheat DDGS (0, 20 and 40%) were fed. Dressing percentage increased in a linear fashion with wheat DDGS (P<0.01) inclusion level and in a quadratic fashion (P=0.01) as corn DDGS inclusion level increased although other carcass traits were not affected (P=0.10) by treatment. The results indicate that replacement of barley grain with corn or wheat DDGS up to 40% of the diet (DM) can lead to superior performance (improved gain:feed or reduced days on feed, respectively) with no detrimental effect on quality grade or carcass SPBBB yield.

冷坩埚电磁连铸弯月面形状的数值模拟

电磁连铸中弯月面与磁场耦合作用，磁场约束弯月面成一定的形状。基于磁流体力学理论，导出以感应电流为末知量的冷坩埚电磁连铸的弯月面与磁场耦合的数学模型，并采用等参变换使连续曲面近似弯月面。在与实验结果对照的基础上，计算了感应器电流强度磁场频率、感应器位置以及冷坩埚的分片数等对弯月面形状的影响及变化趋势。

Integration property of a wedge-elliptic cone waverider with scramjet engine

The hypersonic waverider forebody is designed in this paper. For the present waverider, the undersurface is carved out as a stream surface of a hypersonic inviscid flow field around wedge-elliptic cone, and the upper surface is assumed to be a freestream surface. A finite-volume code is used to generate the three-dimensional flow field. The leading edge is determined by satisfying the condition that the lip is situated at the intersection line of shocks.

Collecção das Leis do Imperio do Brasil de 1844

Parte 1 - Leis