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Efeitos da radiacao ionizante na crotoxina (toxina do veneno de Crotalus durissus terrificus): estudos ao nivel molecular. (Effects of ionizing radiation on crotoxin (toxin of Crotalus durissus terrificus venom): molecular studies).
1988-01-01

It is know that the ionizing radiation is able to change significantly the biological and antigenic response of a toxin depending of the dose and irradiation's conditions, probable by structural alterations caused by radiation. In this work, the crotoxin,...

National Technical Information Service (NTIS)

2
Contribuicao ao estudo da radiosensibilidade do tumor de Walker 256 em ratos. Associacao da imunizacao previa com a acao da radiacao ionizante. (Contribution of radiosensitivity study for Walker 256 tumor in rats. Association of early immunization with action of ionizing radiation).
1979-01-01

The suspension of tumoral cells from Walker 256 were irradiated with doses of 2.500, 4.500, 5.000, 5.500 and 7.500 rad for determining the attenuation dose. The suspension of inactives tumoral cells were injected in rats for verifying the immunized effect...

National Technical Information Service (NTIS)

3
Impacto ambiental decorrente da acao de poluentes no Reservatorio Billings na area metropolitana de Sao Paulo. (Environmental impact from pollutant action in the Billings Reservoir in Sao Paulo metropolitan area - Brazil).
1989-01-01

The ELETROPAULO Electricity from Sao Paulo S/A covers 74 municipal district of the State with electric power, signifying 26% of the energy consumed in Brazil. This paper presents problems with the aquatic plants proliferation and the methods used for thei...

National Technical Information Service (NTIS)

4
Impacto DA Acao Antropica NA Bacia Do Lago Acu (Ma) Atraves de Imagens Landsat (Impact of Anthropogenic Effects on the Lake Acu Basin Based on Landsat Imagery).
1991-01-01

In December 1987, there was a very high fish mortality in Lake Acu, motivating concern in the regional authorities about the environment. The objective is a multitemporal analysis to evaluate the antropic action effects and some natural factors in the env...

National Technical Information Service (NTIS)

5
Caracterizacao DA Acao Antropica Num Trecho Do Medio-Baixo Vale Do Rio Mearim (Ma) Atraves de Imagens LANDSAT-TM (Characterization of Antropic Action in the Mearim (Ma) Middle-Low Valley Through LANDSAT/TM Imagery).
1990-01-01

The existing lakes in the fluvial plain of the Mearim River middle-low valley, are significant food producer areas to migratory birds. The objective is to characterize and evaluate the impact of the antropic action in this region, through LANDSAT/TM image...

National Technical Information Service (NTIS)

6
Acao fotodinamica do azul de metileno: mutagenese e sinergismo. (Photodynamic action of methylene blue: mutagenesis and synergism).
1988-01-01

The associated mutagenesis and the interactions with physical agents in order to potencialize its biological effects are studied. The induction of mutation in bacterias due to photodynamic action of methylene blue is presented as well as the induction of ...

National Technical Information Service (NTIS)

7
Coronary artery anomalies detected by MSCT-coronary angiography in the adult
2008-11-01

BackgroundBefore coronary evaluation by modern imaging techniques was feasible, premorbid diagnoses of coronary artery anomalies (CAAs) were usually made fortuitously by invasive coronary angiography (ICA). However, this technique is limited by its invasive and projectional nature. Coronary magnetic resonance angiography (CMRA) and multi-slice computed tomography (MSCT) broadened clinical ...

PubMed Central

9
da Vinci's drawings - NASA SCI Files

Leonardo da Vinci's Flying Machine Leonardo da Vinci's Flying Machine Click the image to download it.

NASA Website

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