Pkm
Mostrando 1-12 de 65 artigos, teses e dissertações.
-
1. Comparative evaluation of three classical sizing methods of vibrating screens
Abstract The sizing of vibrating screen machines can be done by various methods, most of them based on the classic method of Allis Chalmers (ACM). Due to the wide diffusion and applicability, the Peter King (PKM) and Karra (KM) methods present great technical relevance as well. The objective of this study was to evaluate and compare the results of the screen
REM - International Engineering Journal. Publicado em: 2022
-
2. Dados de estação meteorológica oficial subestimam o estresse por calor em bovinos leiteiros criados em ambiente tropical
RESUMO Determinaram-se os valores de temperatura do ar, umidade relativa e índice de temperatura e umidade (ITU) de uma propriedade rural de produção de leite a pasto e da estação meteorológica oficial mais próxima, confrontando-os. Na fazenda, as leituras dos dados foram registradas por uma estação meteorológica automática, a cada cinco minutos,
Arq. Bras. Med. Vet. Zootec.. Publicado em: 14/06/2019
-
3. Project knowledge management: a study about relevant knowledge, influencing factors and practices in project-based organizations / Gestão do conhecimento em projetos: um estudo sobre conhecimentos relevantes, fatores influenciadores e práticas em organizações projetizadas
Knowledge Management (KM) remains a challenge for many organizations. In project-based companies, in which most professionals are dedicated to project activities, there are additional obstacles to overcome. This happens, among other factors, due to the very own nature of projects, because they are exclusive (making it difficult to learn by repetition) and fi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2012
-
4. Physiological and biochemical traits as tools to screen sensitive and resistant varieties of tomatoes exposed to salt stress
The present study was conducted to evaluate salt tolerance in seven different pure-line cultivars of tomato (Solanum lycopersicum L.) viz. K-21, Pusa Ruby, Pusa Gorav, Hera research, Selection N5, PKM-1 and S-22 based on several physiological and biochemical traits. Seedlings were transplanted to the pots, being exposed to different salinity levels in the fo
Braz. J. Plant Physiol.. Publicado em: 2012-12
-
5. Avaliação do desempenho de máquinas de usinagem com estrutura cinemática paralela plana. / Performance analysis of machine-tool with plane parallel kinematic structure.
This dissertation concerns the performance evaluation of machine-tool with architectures based on planar parallel kinematic structures. The text starts analyzing two distinct types of parallel architectures, their mobility, feasible schemes of actuation and presents their kinematic and dynamic models. From this point, simulations are described to figure out
Publicado em: 2007
-
6. Identification and mapping of regions of the plasmid pKM101 which influence the growth rate and resistance to phleomycin E of Escherichia coli WP2.
The effects of deletion of various regions of the pKM101 genome on several phenotypes conferred by pKM101 in Escherichia coli WP2 cells were investigated. Differences in the response of cells carrying pKM101 or various pKM101 deletion derivatives to the mutagenic effects of phleomycin E can be attributed to differences in sensitivity to the lethal effects of
-
7. Fertility inhibition of RP1 by IncN plasmid pKM101.
IncN plasmids, including pKM101, strongly inhibit the conjugal transfer of cohabiting IncP plasmids. We localized the pKM101 DNA sufficient for this phenomenon to a 1.1-kilobase region (denoted fip). Two fip-deficient Tn5 insertion derivatives of pKM101 were isolated; neither affected other pKM101-mediated functions. fip did not inhibit either the synthesis
-
8. Isolation and characterization of mutants of the plasmid pKM101 deficient in their ability to enhance mutagenesis and repair.
A screening procedure was developed for identifying mutants of the plasmid pKM101 no longer capable of enhancing mutagenesis. The test was based on the large pKM101-mediated increase in the number of Gal+ papillae observed on colonies of Salmonella typhimurium gal mutants plated on tetrazolium-galactose plates in the presence of a mutagen. The pKM101 mutant
-
9. Effect of pKM101 on cell killing and specificity of mutation induction by cis-diaminedichloroplatinum(II) in Escherichia coli K-12.
Cell killing and mutation induction in the lacI gene of Escherichia coli by cis-Pt(NH3)2Cl2 were studied in cells with different repair capacities, with and without pKM101. The presence of the plasmid pKM101 made repair-proficient cells more susceptible to killing by cis-Pt(NH3)2Cl2 and strongly enhanced mutation induction by that compound. Both effects were
-
10. Spontaneous mutational specificity of drug resistance plasmid pKM101 in Escherichia coli.
Plasmid pKM101 enhances the frequency of spontaneous and ultraviolet light-induced mutations in Escherichia coli and protects the cells against the lethal effects of ultraviolet irradiation. By analyzing reversion patterns of defined trpA alleles, we showed that pKM101 caused all types of spontaneous base-pair substitution mutations with the possible excepti
-
11. Mutational Specificity of Ultraviolet Light in ESCHERICHIA COLI with and without the R Plasmid Pkm101
Plasmid pKM101 provides UV protection and increases the frequency of spontaneous and UV-induced mutations in Escherichia coli. By analyzing reversion patterns of defined trpA alleles, we showed that pKM101 altered the mutational specificity of UV-induced mutations. Certain UV-induced base-pair substitutions were strongly enhanced, while others were decreased
-
12. Functional organization of plasmid pKM101.
Tn5 insertion mutants and in vitro-generated deletion mutants of the mutagenesis-enhancing plasmid pKM101 have been used to identify several genetic regions on the pKM101 map. In clockwise order on the pKM101 map are: (i) the bla gene, coding for a beta-lactamase; (ii) the Slo region, responsible for retarding cell growth on minimal medium; (iii) the tra gen