Clean Nature
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. INVESTIGAÇÃO SOBRE A FORMAÇÃO DE ESPÉCIES DE ARSÊNIO ORGÂNICO EM SOLUÇÕES DE NUTRIÇÃO PARENTERAL
Parenteral nutrition is the nutrients administration by intravenous mean in patients who cannot consume them for gastrointestinal way. Parenteral Nutrition Solutions are stored in glass and plastic containers, being the glass the most used due to its rigid structure, chemical resistance, sterilization easiness and transparency. Among glass constituents is th
Publicado em: 2006
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14. The influence of soil characteristics in remediation of contaminated soils through advanced oxidation process with Sodium Persulfate and Fenton Reagent. / A influência das características dos solos na remediação de solos contaminados através de processos oxidativos avançados com persulfato e reagente de fenton
The remediation techniques used in contaminated soils such as "in situ" chemical oxidation aim essentially the mineralization of contaminants, reducing it to CO2 and H2O. The objective of this study is pointing out the results of experiments conducted to investigate how the soil characteristics such as granulometry, assay and nature of clay minerals as well
Publicado em: 2006
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15. Avaliação emergetica de propriedades agrosilvipastoris do Brasil e da Colombia. / Emergy evaluation of agrisilvopastoral systems in Brasil and Colombia.
The objective of this paper is to make use of the Emergy Analysis in order to diagnose the performance of cattle breeding productive systems and agricultural and silvopastoral systems and use the results to propose production methods that have harmful impacts on the environment. The agricultural and agrosilvopastoral systems (SAPS) is an agricultural modalit
Publicado em: 2006
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16. O reescrever em contexto escolar: um estudo sobre produÃÃo de textos no Ensino MÃdio
This thesis aims at describing and to interpreting clues of the process of writing in six texts - two argumentative texts, two letters to the editor and two fantastic narratives -, written in two or three versions. There are sixteen texts altogether produced by two students from the first year of secondary school in the city of Cabo de Santo Agostinho, first
Publicado em: 2004
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17. O conflito entre o direito de propriedade e o meio ambiente e a questÃo da indenizaÃÃo das Ãreas de preservaÃÃo florestal
Ownership, as it is currently constitutionally protected, can no longer be understood in its liberal conception, in which the owner was allowed to make unlimited use of his property, for ownership is no longer an individual right, but a socially collective one. Because the rules that assure the right to property and to a clean environment have the nature of
Publicado em: 2003
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18. Ocorrência de compostos organoclorados (pesticidas e PCBs) em mamíferos marinhos da costa de São Paulo (Brasil) e da Ilha Rei George (Antártica). / Occurrence of organochlorine compounds (pesticides and PCBs) in marine mammals from São Paulo coast (Brazil) and King George Island (Antarctica).
Organochlorine compounds cause strong impact on the nature, as a consequence of three basic characteristics: environmental persistence, bioaccumulation, and high toxicity. The marine mammals are one of the most vulnerable organisms to the chronic toxicity of these contaminants. Besides the high concentration in the body, the female transfers part of her load
Publicado em: 2002
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19. PROCEDURE FOR CLEANING OF CLOSTRIDIUM BOTULINUM SPORES1
Grecz, N. (Quartermaster Food and Container Institute, Chicago, Ill.), A. Anellis, and M. D. Schneider. Procedure for cleaning of Clostridium botulinum spores. J. Bacteriol. 84:552–558. 1962.—Liberation of clean spores from vegetative sporangia of Clostridium botulinum strains was accomplished by the use of lytic enzymes and sonic oscillation. Suspension
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20. Survival of human enteroviruses in the Hawaiian ocean environment: evidence for virus-inactivating microorganisms.
The stability of certain human enteroviruses in the Hawaiian ocean environment was examined. The present data indicated that the time for 90% reduction of poliovirus type 1 at 24 +/- 1 degree C in seawater samples obtained from different sites in Hawaii ranged from 24 to 48 h, and complete inactivation occurred within 72 to 96 h. The accumulated evidence als
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21. Engineering a Reduced Escherichia coli Genome
Our goal is to construct an improved Escherichia coli to serve both as a better model organism and as a more useful technological tool for genome science. We developed techniques for precise genomic surgery and applied them to deleting the largest K-islands of E. coli, identified by comparative genomics as recent horizontal acquisitions to the genome. They a
Cold Spring Harbor Laboratory Press.
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22. Pyrophosphorylases in potato. V. Allelic polymorphism of UDP-glucose pyrophosphorylase in potato cultivars and its association with tuber resistance to sweetening in the cold.
UDP-glucose pyrophosphorylase (UGPase) was cloned from six American and nine European potato (Solanum tuberosum L.) cultivars. Restriction mapping of the different UGPase-cDNAs with BamHI, HindIII, and EcoRI revealed that at least two mRNA populations were present in most cultivars. Staining for UGPase activity in nondenaturing gels of proteins extracted fro
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23. Bubble Contact Angle Method for Evaluating Substratum Interfacial Characteristics and Its Relevance to Bacterial Attachment
A bubble contact angle method was used to determine interfacial free-energy characteristics of polystyrene substrata in the presence and absence of potential surface-conditioning proteins (bovine glycoprotein, bovine serum albumin, fatty acid-free bovine serum albumin), a bacterial culture supernatant, and a bacterial exopolymer. Clean petri dish substrata g
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24. Diverse Enzymological Patterns of Phenylalanine Biosynthesis in Pseudomonads Are Conserved in Parallel with Deoxyribonucleic Acid Homology Groupings
l-Tyrosine biosynthesis in nature has proven to be an exceedingly diverse gestalt of variable biochemical routing, cofactor specificity of pathway dehydrogenases, and regulation. A detailed analysis of this enzymological patterning of l-tyrosine biosynthesis formed a basis for the clean separation of five taxa among species currently named Pseudomonas, Xanth