Дисертації з теми "Spt8"
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Bhat, Abdul Wajid. "Regulation of transcription elongation factors SPT2 and SPT6 by casein kinase II." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29184/29184.pdf.
Повний текст джерелаLike any other DNA-related process, chromatin structure is in a state of constant flux during transcription, unfolded to get access to DNA and refolded back properly. The dynamics of chromatin structure are tightly regulated and multiple mechanisms act together to make the process highly efficient. These include modifications of histones, chromatin remodeling by ATP-dependent remodeling factors, incorporation of histone variants and nucleosome disassembly and reassembly by histone chaperones. In addition to these activities, there are a number of non-histone chromatin components that are directly involved in the modulation of chromatin associated with transcription. In yeast, one of these factors is the HMG-like protein Spt2p previously shown to participate directly in the process of nucleosome reassembly in the wake of RNA polymerase II movement along transcribed DNA. In this work, we show that Spt2p is directly phosphorylated by the casein kinase II (CKII) and we demonstrate that this modification inhibits its association with chromatin. Our findings indicate that CKII disrupts the interaction of Spt2p with the histone chaperone Spt6p. Interestingly, we also found that direct phosphorylation of Spt6p by CKII stimulates the association of this factor with another partner, Iws1p. This association is absolutely required for the refolding of nucleosomes during elongation. Furthermore, this positive regulation of the Spt6p/Iws1p complex by CKII modulates directly the association of this complex with the H3K36 methyltransferase Set2p. Finally, we show that phosphorylation of Spt6p by CKII is essential to the inhibition of cryptic promoters and spurious transcription. Taken together, our results suggest a new mechanism whereby CKII directs chromatin structure refolding in coding regions by modulating the interaction of the essential histone chaperone Spt6p with its partners Spt2p, Iws1p and Set2p.
Dürr, Julius [Verfasser], and Klaus [Akademischer Betreuer] Grasser. "The role of the transcription elongation factor SPT4-SPT5 in plant growth and development / Julius Dürr. Betreuer: Klaus Grasser." Regensburg : Universitätsbibliothek Regensburg, 2015. http://d-nb.info/1065445318/34.
Повний текст джерелаVojnić, Erika. "NMR solution structure of the Set2 SRI domain and preparation of RNA polymerase II complexes with the elongation factor Spt4-Spt5." [S.l.] : [s.n.], 2006. http://edoc.ub.uni-muenchen.de/archive/00006976.
Повний текст джерелаVojnic, Erika. "NMR solution structure of the Set2 SRI domain and preparation of RNA polymerase II complexes with the elongation factor Spt4-Spt5." Diss., lmu, 2006. http://nbn-resolving.de/urn:nbn:de:bvb:19-69769.
Повний текст джерелаBurckin, Todd A. "Probing the integration of steps in the gene expression pathway through analysis of the SPT4-SPT5 transcription elongation complex in Saccharomyces cervisiae /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2004. http://uclibs.org/PID/11984.
Повний текст джерелаHowarth, Clayton. "Motorinformationens roll i SPT-effekten." Thesis, University of Skövde, School of Humanities and Informatics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-940.
Повний текст джерелаDet har visat sig vara bättre att öva in listor med handlingsfraser genom att utföra dem (SPT, subject-performed tasks) än genom att bara läsa dem (VT, verbal tasks). Vid ett återerinringstest visar sig SPT-effekten då försöksdeltagare med SPTs har ett mycket bättre minne av materialet än försöksdeltagare med VTs. En förklaring till fenomenet är att utförandet av handlingsfraserna förser deltagarna med motorinformation. I den här undersökningen testas motorinformationens roll i SPT-effekten på ett sätt som skiljer sig från traditionell SPT-forskning. Försöksdeltagare fick antingen cykla eller använda en joystick för att navigera genom en virtuell värld där ord fanns utplacerade. Minnet för orden testades sedan i ett efterföljande minnestest. Det visade sig att joystickgruppen kunde återerinra sig fler ord än cykelgruppen. Effekten var oväntad och misstänks bero på bättre koncentrationsmöjligheter för joystickgruppen.
Kasberg, Abigail D. "Sp8 Function During Craniofacial Development." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396452767.
Повний текст джерелаBelincanta, Antonio. "Avaliação de fatores intervenientes no Índice de Resistência à Penetração do SPT." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-12062018-162336/.
Повний текст джерелаThis research work presents some important aspects of the origin, evolution and standardization of the Standard Penetration Test (SPT), both in Brazil and abroad. It will also introduces the currently used variations of the proposed ABNT (Brazilian Association of Technical Standard) test method, which encompass the use of steel rope and drilling advance by sampler driving, and a preliminary evaluation on N values. Finally, it also analyses the influence on N results, of variables such as type of hammer, free weight fall system, use of mobile sheave wheel, size of anvil, state of conservation of sampling rods and use or not of a hard wood cushion. Analysis and evaluation were performed using selected data obtained from six different companies which carried out tests in four cities at three different Brazilian States. Finally suggestions are made for the continuity of research works on this subject aiming SPT test improvement by the understanding of the variables which affect N values which will contribute to its standardization.
Bayliss, M. B., J. Ruel, C. W. Stubbs, S. W. Allen, D. E. Applegate, M. L. N. Ashby, M. Bautz, et al. "SPT-GMOS: A GEMINI/GMOS-SOUTH SPECTROSCOPIC SURVEY OF GALAXY CLUSTERS IN THE SPT-SZ SURVEY." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/622337.
Повний текст джерелаLoeliger, Erin Michelle. "Structure-Function Analysis of the Conserved Histone Chaperone Spt6." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11369.
Повний текст джерелаNg, Iok Tong. "Geotechnical site characterization based on SPT." Thesis, University of Macau, 1999. http://umaclib3.umac.mo/record=b1445031.
Повний текст джерелаOdebrecht, Edgar. "Medidas de energia no ensaio SPT." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2003. http://hdl.handle.net/10183/5840.
Повний текст джерелаLopes, Mike dos Santos. "Avaliação da eficácia energética no ensaio SPT." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2720.
Повний текст джерелаEsta tese de fim de curso aborda a influência das perdas de energia num dos ensaios de caracterização geotécnica mais usados em todo o mundo, o Standard Penetration Test, mais conhecido como SPT. Essas perdas de energia afectam os resultados do ensaio, sendo que nesta tese, se quantificou a eficácia energética de modo a se tentar perceber a influência dessas perdas nos resultados finais. Para tal, realizou-se uma campanha de três ensaios na Guarda analisando-se posteriormente, com ajuda de software (Pile Driving Analyser), os 163 golpes resultantes da mesma. Nesta campanha para além da medição da energia transferida ao trem de varas, também se avaliou a altura de queda e a velocidade de impacto do martelo, observando-se no final do ensaio a existência de uma diferença entre a energia teórica e a energia medida. ABSTRACT: This graduation’s work addresses the impact of the loss of energy in one of the most used tests of geotechnical characterization throughout the world, the Standard Penetration Test, better known as SPT. These losses of energy affect the test results, so in this graduation’s work we quantified the energy efficiency in order to try to understand the influence of those losses in the final results. To this end, a campaign of three tests was performed in Guarda analyzing later, with help of software (Pile Driving Analyzer), the 163 blows from this campaign. In this campaign beyond the measurement of energy transferred to the poles, we also evaluated the height of fall and the velocity impact of the hammer. Looking at the end of the test that there exists a difference between the theoretical and measure energy.
Morais, Thaise da Silva Oliveira. "Interpretação racional de resultados de ensaios SPT com base em conceitos de energia." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-29022016-111249/.
Повний текст джерелаThe Standard Penetration Test (SPT) with measurement of the index of resistance to dynamic penetration of the sampler (NSPT) is one of the most widespread in situ tests in Brazil. The popularity of this test is due to its practicality, low cost, acquired experience by practitioners and simple applicability of its results. However, this test has been widely criticized because of variation in equipment and procedures, which causes significant dispersion in the results. The NSPT index is usually used to estimate the bearing capacity and settlement of foundations, using empirical or semi-empirical correlations. This fact also receives criticism, as these correlations are based on practical observations without any scientific basis. The NSPT index depends on the amount of energy delivered to the sampler, during the blow in the SPT test. Thus, knowing the equipment efficiency allows normalizing the NSPT values to a standard reference value. The international reference value corresponds to an efficiency of 60%. In this way, the rational analysis of the results of SPT tests essentially depends on the estimation of the quantities of energy involved in the test. This research presents the rational interpretation of the SPT test results based on monitoring the amounts of energy involved in the test. The energies were indirectly obtained through force and acceleration signals during the stress wave propagation along the string of rods. For this, rod subassemblies instrumented with load cells and accelerometers were used. A suitable data acquisition system for monitoring dynamic events was also used. The SPT tests were performed with instrumented subassemblies placed at two positions along the string of rods (top and bottom simultaneously). Thus, from this arrangement, the amounts of energy accountable for the sampler penetration and the energy losses occurred were determined. Likewise, the dynamic resistances mobilized in the soil-sampler system during the penetration were determined from the force and acceleration signals at the top of the sampler. These experimental results were compared with those theoretical results, based on the Principle of Hamilton. With the efficiency results, the length of recovered samples and the external skin friction in the soil-sampler system, the balance of the reactions mobilized in the sampler was verified, as proposed by Aoki (2013). Thus, the tip and skin friction (internal and external) resistances in the soil-sampler system were obtained.
Humphreys, D. "Identification of a novel substrate of the Salmonella protein tyrosine phosphatase SptP." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604780.
Повний текст джерелаKiely, Christine M. "Spt6 Regulates Transcription and Chromatin Structure in the Fission Yeast, Schizosaccharomyces Pombe." Thesis, Harvard University, 2011. http://dissertations.umi.com/gsas.harvard:10027.
Повний текст джерелаZimpel, Cristina Kraemer. "Sequenciamento, anotação e análise do genoma completo de Mycobacterium bovis cepa SP38." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/10/10134/tde-25072017-120925/.
Повний текст джерелаTuberculosis is an infectious disease caused by bacteria of the Mycobacterium tuberculosisComplex (MTBC) that affects human beings and/or animals. Members of this complex clonally evolved and have high genomic similarity, differentiated by single nucleotide polymorphisms (SNPs) and regions of difference (RDs). Among the animal tuberculosis pathogens, Mycobacterium bovis, the causative agent of bovine tuberculosis, is the MTBC member of greatest global importance. Therefore, the aim of the present study is to sequence, assemble and annotate the genome of the Brazilian strain SP38 of M. bovis, followed by the comparative genomics with other M. bovis genomes available in GenBank. Mycobacterium bovis SP38 has a traditional mycobacteria genome. It has a single and circular chromosome with 4,347,646 bp, high GC content (65.6%), and 4,216 genes, including 154 pseudogenes, 3 rRNA genes (ribosomal RNA), 45 tRNA (transfer RNA), 2 ncRNA (non-coding RNA), 1 tmRNA (transfer-messenger RNA), and 4,011 coding DNA sequences (CDSs) (NZ_CP015773.1). The majority of CDSs (2,805 - 69,93%) was annotated with function and 1,206 (30,07%) are hypothetical. For the comparative genomics analyses, the 31 genomes (complete and drafts) of M. bovis available in GenBank, 32 Mycobacterium bovis BCG and, 23 of Mycobacterium tuberculosis were chosen. In silico analysis of the RDs patterns resulted in the exclusion of three genomes, mistakenly annotated as virulent M. bovis. Orthologous gene analysis suggests that strains of M. bovis are under genomic decay. The quantification of polymorphic sites indicates the greater variability in absolute numbers (8,335 in M. tuberculosis, 3,448 in virulent M. bovis, and 1,088 in M. bovis BCG) and in pairwise comparisons (p≤0,05) of M. tuberculosis compared to virulent M. bovis and M. bovis BCG, suggesting that M. tuberculosis is under high evolutionary pressure. This is in contrast to the fact that M. bovis is capable of infecting a higher number of host species than M. tuberculosis. Most of these polymorphic sites are located in hypothetical CDSs (31.7% - 52.3%), being associated with PE/PPE family, and demonstrating a nonsynonymous mutations proportion of the following increasing order: M. bovis BCG, virulent M. bovis and M. tuberculosis (48.90%, 51.92% and 59.52%, respectively). This lower proportion of nonsynonymous mutations and the dissimilar functional categorization of CDSs with polymorphic sites indicates that M. bovis BCG is subjected to different selective pressure when compared to virulent M. bovis and M. tuberculosis. Finally, the phylogenetic analysis based on polymorphic sites indicates that the phylogenetic grouping of M. bovis is supported by Clonal Complexes (CCs), and not by the host of M. bovis isolates, confirming that polymorphic sites can be used for phylogenetic classification of genetic lineages of this bacterial species. Furthermore, 2/28 (7.14%) genomes of M. bovis could not be classified in the currently described CCs, suggesting the existence of complexes yet to be determined. This study represents the first genome of a Brazilian strain of M. bovis to be completely sequenced and the first comparative genomic analysis of the genomes of this bacterial species.
Vigano, Andre De Souza. "Simulation of an SP8T 18 GHz RF Switch Using SMT PIN Diodes." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2259.
Повний текст джерелаNguyen, Chi Hanh. "Receiver Selection and Calibration Unit for EHT-SPT (RESCUES)." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/579318.
Повний текст джерелаDiebold, Marie-laure. "Etude biochimique, structurale et fonctionnelle du complexe chaperonne d'histone/facteur d'élongation Spt6/Iws1." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00819618.
Повний текст джерелаFielden, D. J. "The role of Spt4/5 and the search for antitermination complexes in archaea." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1455740/.
Повний текст джерелаYoudell, Michael. "The role of Spt6 and histone H3 lysine 36 methylation in mRNA production." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670030.
Повний текст джерелаDiebold, Marie-Laure. "Etude biochimique, structurale et fonctionnelle du complexe chaperonne d'histone/facteur d'élongation Spt6/Iws1." Thesis, Strasbourg, 2012. http://www.theses.fr/2012STRAJ008/document.
Повний текст джерелаProduction of functional messenger RNA (mRNA) requires a complex mechanism that couples transcription with maturation and export of the mRNA. In addition to this mechanism, chromatin needs to be unwound to allow the transcription machinery access the DNA, this unwinding being also highly regulated. Thus, production of a functional mRNA requires a huge number of factors implicated in these different processes. Among these proteins Spt6 and Iws1 are participating in the mechanism of transcription, chromatin unwinding, and maturation and export of the mRNA. The work carried out during this thesis has enabled the biochemical, structural and functional characterization of these proteins, their complex and their interaction with other effectors of transcription. This work has specifically enabled the molecular and functional characterization (i) of the recruitment of Spt6 by RNA polymerase II and (ii) of the formation of the Spt6/Iws1 complex. Moreover, this work has identified putative new partners of Spt6, not ably the elongation factor TFIIS. Thus, our work has highlighted the essential and complex role of Spt6 and Iws1 during the production of functional mRNA, and has also enabled future studies of the complexes formed by these two proteins with other transcriptional factors
Rocha, Breno Padovezi. "Emprego do ensaio SPT sísmico na investigação de solos tropicais." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-28112013-100232/.
Повний текст джерелаThe main objective of this work is to assess the applicability of the hybrid test, the Seismic SPT (S-SPT), i.e. the up-hole seismic test carried out together with SPT test, in order to achieve a better site characterization of tropical soils. The most used hybrid test to determine the soil parameters, including the maximum shear modulus (Go), is the seismic cone test (SCPT). The possibility of measuring the S wave velocity together with the SPT test using the up-hole technique is an interesting alternative. This combined technique was scarcely used in Brazil and it has been recently developed and tested. In this work, the concomitant measuring of the SPT N value together with the S wave velocity in the same test allowed calculating the maximum shear modulus (Go) and assessing the advantages of obtaining the Go/N ratio, similar to the Go/qc ratio, for the site characterization of tropical collapsible soils. The research areas are the experimental sites of UNESP-Bauru, USP-São Carlos and UNICAMP-Campinas, where SPT tests were carried out. The results of these tests were compared with reference values VS, which were determined via cross-hole, down-hole and SCPT tests. The differences between VS values were, in average, 8.5%, 9.0% and 16.0% respectively for UNESP-Bauru, USP-São Carlos and Campinas-UNICAMP research sites. The hybrid S-SPT test can be used to define the Go profile, together with the N SPT values, with a relatively low cost. It was found that the Go/N ratio is higher in the lateritic soil layer and it gets lower as the soil profile is less developed. The same tendency was observed with the S-SPT tests, however with less distinctness. This fact can be associated to a higher difficulty on the interpretation of seismic wave traces with the up-hole technique as well as to soil variability.
Perez, Waldo Flores, Jorge Chavez Cerdena, Gary Duran Ramirez, and Maggie Martinelli Montoya. "Correlation of dynamic probing light (DPL) and standard penetration test (SPT) for sandy soil of alluvial origin." Institute of Electrical and Electronics Engineers Inc, 2020. http://hdl.handle.net/10757/656568.
Повний текст джерелаIn geotechnical studies, the dynamic probing light (DPL) turns out to be an alternative method to the Standard Penetration test (SPT) for the determination of soil parameters. The requirement of various regulations for correlating both tests in the same field and not establishing a methodology to carry it out, limits the practical scope of dynamic probing light. Thus, this research presents a correlation methodology between the dynamic probing light (DPL) and the Standard Penetration test (SPT) specifically for sandy soils (SP and SP-SM) located in an area of Chilca, located in Cañete. - Lima Peru. For the analysis, more than 400 data pairs were used, obtaining two linear correlations between the count blow of Standard Penetration-NSPT test and the dynamic probing light method-N10, which presented an adjustment correlation between 84% and 87 %.
Lukiantchuki, Juliana Azoia. "Interpretação de resultados do ensaio SPT com base em instrumentação dinâmica." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-24052013-103725/.
Повний текст джерелаThe standard penetration test (SPT) is usually used to estimate the soil strength through the NSPT index which represents the dynamic reaction force of the sampler penetration into the soil. This index is directly used in empirical or semi-empirical correlations for the determination of the bearing capacity and foundation settlements. However, this test has been criticized due to the use of these empirical correlations, often based on practical observation without any scientific basis. Criticism is also related to result dispersion due to the use of different types of equipment and execution procedures. The NSPT index depends on the amount of energy that is effectively transmitted to the sampler during the hammer fall. Thus, rational analyses of the SPT test results essentially depend on the estimation of this amount of energy. For this reason, several studies related to the energy involved in SPT test have been developed. This research presents interpretations of the SPT test results from the amounts of energy involved during the hammer fall. These amounts of energy are indirectly assessed by means of normal force and acceleration signals during the stress wave propagation along the string of rods. For this reason, a device that includes instrumentation capable of registering these signals of normal force and acceleration was developed. A series of tests was performed with the instrumentation installed at the top and the bottom of the string of rods. This arrangement allowed estimating the amount of energy available at the top and bottom of the string of rods. Thus, it was possible to estimate the efficiency of the SPT equipment basing on the amount of energy that actually reaches the sampler. From the recorded signals, it was also possible to assess the dynamic reaction force mobilized in the soil-sample system. The results were compared with other results obtained by theoretical methods, based on the Hamilton´s Principle, for evaluating the static and dynamic reaction force of the soil. These analyzes have shown that theoretical equations may be suitable for the determination of the soil strength, provided that the amount of energy that actually reaches the sampler be considered. Thus, these theoretical equations can be easily incorporated into the practice of foundation designs contributing to the development of methods based on the amount of energy required for the penetration of the sampler into the soil.
Aktas, Yusuf. "Application Of Active Sampling And Sptd/gc-ms Analysis Methodologies For Terpenes At Uludag Mountain." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/2/1045368/index.pdf.
Повний текст джерелаalpha-pinene, camphene, beta-pinene, d-limonene, gamma-terpinene, linalool, 1-isopulegol, 1-borneol, dl-menthol, alpha-terpineol, dihydrocarveol, citronellol, pulegone, geraniol
and gas phase inorganic pollutants (O3 and NOx) were investigated on Uludag Mountain, which is the highest point in North-west Turkey. The sampling site (1645 m altitude) is surrounded by mainly Uludag fir, which is characteristic to Uludag, while altitudes lower than 1000 m were composed of mixed deciduous trees. Sampling apparatus and sampling strategy for collection of the studied terpenes on Uludag Mountain were developed. Breakthrough Volume experiments were performed for accurate sampling. Samples were collected in a field campaign performed during October 2002 by means of active sampling onto glass coated stainless steel tubes containing Tenax&
#61666
TA (55 mg) and Carbopack&
#61652
B (65 mg). The mass flow rate and duration of sampling were 30 mL/min and 4 hours. Short-Path-Thermal-Desorption/Gas Chromatography-Mass Spectrometer (SPTD/GC-MS) was used for the analysis of monoterpenes during 12-14 October 2002. The cryogenic preconcentration (-40oC) was maintained by liquid CO2. HP-1-MS capillary column provided good resolution of peaks, except for pulegone and citronellol at standard operation procedure. Internal standard calibration was applied by adding carefully measured spikes of fenchone to the samples and standards. The detection limits for each terpene were found to be at sub-ppbv level. Daily intermediate standard measurements and auto-tune provided checking the instrumental capabilities. Selected Ion Monitoring mode was used for analysis of the terpenes. For quantitation of the spectra at least one qualifier ion was expected to be within 80% correlation with target ion. Alpha-pinene, camphene, beta-pinene, and d-limonene were determined. The average concentrations of monoterpenes were found to be 0.385, 0.168, 0.111, and 0.204 ppbv respectively. Simultaneous measurements of O3, NOx, SO2, and meteorological parameters were also performed. The data resolution was 15 min for each pollutant. Ozone displayed strong diurnal variation (around 5-30 ppb), while NOx concentrations were almost constant around 15 ppb. During the sampling campaign terpenes showed similar behaviours with O3, but not with NOx. Terpenes had a direct relation with temperature and relative humidity.
Thebault, Philippe. "Le facteur d'élongation SPT2/SIN1 est impliqué dans l'assemblage du nucléosome couplé à la transcription." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26726/26726.pdf.
Повний текст джерелаLee, Wai-ming. "Correlation of PCPT and SPT data from a shallow marine site investigation /." View the Table of Contents & Abstract, 2004. http://sunzi.lib.hku.hk/hkuto/record/B30110385.
Повний текст джерелаLee, Wai-ming, and 李慧明. "Correlation of PCPT and SPT data from a shallow marine site investigation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B44570077.
Повний текст джерелаSullivan, Kay Ueda 1980. "PIC simulation of SPT Hall thrusters : high power operation and wall effects." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17839.
Повний текст джерелаIncludes bibliographical references (p. 77-79).
The fully kinetic Hall Thruster simulation built by [1] and used by [2] is further refined and used to obtain results for the P5 SPT Hall thruster at 3kw and 5kw operation. Performance data agree well with experiments [3], although very low values of anomalous diffusivity must be used for convergence. Particle temperatures and plasma potentials in the chamber are similar to experimental results, although charged particles and peak ionization rates are found further upstream than is observed experimentally. Electron transport mechanisms and the magnetic field configuration are analyzed for their physical consistency and effect on particle placement. Electron mobility rates are found to be physical although the reason for high Hall parameter is still unclear. Strong magnetic mirror effects, that are not reported in experimental data, are found in the simulation. Meanwhile, two sputtering models are added to the simulation and tested. A yield model based on [4]'s theories and implemented with [5]'s functions is found to agree well with experimental yield data for 300eV to 1000eV sources, but produces small yields at thruster operating conditions.
by Kay Ueda Sullivan.
S.M.
Strandet, M. L., A. Weiss, J. D. Vieira, Breuck C. de, J. E. Aguirre, M. Aravena, M. L. N. Ashby, et al. "THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/621235.
Повний текст джерелаSheffield, Kimberly Kay. "Interplay of Transcription Factor E and Spt4/5 During Transcription Initiation in Pyrococcus furiosus." PDXScholar, 2018. https://pdxscholar.library.pdx.edu/open_access_etds/4444.
Повний текст джерелаFerreira, Marlon Queiroz. "Adaptação do ensaio SPT para determinação de parâmetros adicionais para o dimensionamento de fundações." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-13052016-113414/.
Повний текст джерелаThis research was developed in order to add some procedures to the SPT test, to obtain new parameters for the design of foundations, since this test is the most used in Brazil for this purpose. The additional measurements are: the energy delivered to the rod during a hammer impact, and the sampler\'s shaft resistance known from static uplift. For this investigation, nine uplift tests were conducted on the SPT sampler, in three boreholes, at three different depths (two, five and ten meters) to the determination of the SPT side friction resistance. Additionally, two compressive static load tests were carried out on the sampler in a fourth borehole to the determination of the efficiency of the SPT equipment. The results showed that the SPT test could provide measurements of end bearing and side friction resistances. Also, a SPT normalized friction ratio was determined for the classification of soil in a similar way used based on CPT data. In addition, the ratio between the internal and the external skin friction in the sampler during the test, known as \"a\" was analyzed. The values of this ratio were higher for the soil with higher percentage of gravel, and smaller for the soil with higher percentage of fines. Additionally, the \"a\" value increases linearly with the ratio between the NSPT value and the effective vertical stress at the tested depth. The results of the ratio between the SPT end bearing resistance and the NSPT found in this research are of similar magnitude to the ratios between CPT end bearing resistance and the NSPT found in the literature.
Silva, Edna de Mello. "Telejornalismo e comunidade: o bairro como espaço de cena e o olhar vigilante no SPTV 1ª edição." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/27/27153/tde-22072009-175924/.
Повний текст джерелаThis thesis discusses the practice of called communitarian journalism on SPTV Comunidade, shown on tv news SPTV 1a. edição on Rede Globo de Televisão. Here, I try to get the different social discourses, wich interact with the news tv and its communities. This research discusses the history of Brazilian news, the concepts of community and the space of the so called alternative journalism as well as the field of the communitary journalism. The news reports shown on SPTV Comunidade are studied according to the theories of discurses and the content analysis. In this work, the Language Sciences are the basis for further discussions as well as theoretical basis. The studies of Michel Foucault concering disciplinar society and the panopticism, as well as Maingueneaus notion of scenography have also contributed to the our results. This results show the various districts are portraited as a scenario for the tv news discourse, wich work as social discipliner, in other words it disciplinates various discourse places and the communities visibilities.
Pedrini, Rubens Antonio Amaral [UNESP]. "Desenvolvimento de sistema para sísmica up-hole em conjunto com o ensaio SPT." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/92971.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Este trabalho apresenta o sistema e metodologia para realização e interpretação de ensaios sísmicos up-role durante uma sondagem de simples reconhecimento (SPT). Este ensaio híbrido, conhecido também como S-SPT, incorpora a medida de velocidade de propagação de ondas de cisalhamento (Vs) ao ensaio SPT, visando uma melhor investigação do subsolo. A possibilidade de se medir, ao mesmo tempo e no mesmo furo, os valores de N do SPT e Vs, permitem calcular o módulo de cisalhamento máximo (Go), abrindo uma nova perspectiva para investigação de solos tropicais colapsíveis, a partir da relação Go/N, similar a relação Go/qc. O sistema é composto por um hardware (geofones, trigger e sistema de aquisição de dados) e softwares, um para registro dos sinais sísmicos e outro para sua interpretação. A metodologia de execução dos ensaios foi aperfeiçoada, a partir da realização de várias campanhas de ensaios de campo. Para a interpretação dos sinais e cálculo das velocidades foi elaborado um software, que possibilita definir os perfis de Vs sem a necessidade de outras ferramentas. Esse software possibilita o processamento e visualização dos registros, além de permitir aplicar um método específico para cálculo das velocidades de onda considerando a refração das ondas durante sua propagação através das diversas camadas do meio, conforme a Lei de Snell. Foram realizadas campanhas de ensaios S-SPT em um campo experimental localizado na cidade de Bauru, interior do estado de São Paulo, Brasil, para desenvolver o sistema e validar sua aplicação. Os resultados desses ensaios foram comparados com valores de Vs referência, determinados através de ensaios sísmicos down-hole, tipo SCPT. O ensaio S-SPT mostrou ser uma técnica interessante e aplicável, uma vez que a diferença entre os valores de Vs medidos com os de referência foi baixa, com um valor médio inferior a 10% para as áreas investigadas. Deste modo, pode ser
This work presents a system and methodology for performing and interpreting up-hole seismic tests together with the Standard Penetration Test (SPT). This hybrid test, also known as S-SPT, incorporates the measurements of shear waves velocity propagation (Vs) in the SPT, for a better site investigation. The possibility of measuring simultaneously in the same borehole, the N SPT and the Vs values which allows calculating the maximum shear modulus (Go), opens new perspectives for the investigation of collapsible tropical soils, from Go/N ratio, similar to Go/qc. The system consists of a hardware (geophones, trigger and data aquisition system) and software, one to record of the seismic signals and the other for its interpretation. The methodology for carrying out the tests was improved after several field trials. A software was developed for interpretation of records and calculating velocities, which allows to define the Vs profiles without the need of additional tools. This software enables processing and displaying records, and also allows applying a specific method for calculating velocities considering the waves refraction during their propagation through the various layers of the soil mass, according to the Snell's Law. The S-SPT campaigns were carried out in an experimental field located in the city of Bauru, São Paulo, Brazil, to develop the system and validate its application. The results of these tests were compared with Vs reference values, which were determined by the down-hole seismic test, SCPT type. The S-SPT test proved to be an interesting applicable technique, since the differences to the Vs reference values were small, wich and average lower than 10% for the investigated site. The S-SPT test can be considered as an option for determining the maximum shear modulus, with the advantage of being performed together with the most widely used test for site investigation, the SPT
Soergel, B., S. Flender, K. T. Story, L. Bleem, T. Giannantonio, G. Efstathiou, E. Rykoff, et al. "Detection of the kinematic Sunyaev–Zel'dovich effect with DES Year 1 and SPT." OXFORD UNIV PRESS, 2016. http://hdl.handle.net/10150/621727.
Повний текст джерелаHaan, T. de, B. A. Benson, L. E. Bleem, S. W. Allen, D. E. Applegate, M. L. N. Ashby, M. Bautz, et al. "COSMOLOGICAL CONSTRAINTS FROM GALAXY CLUSTERS IN THE 2500 SQUARE-DEGREE SPT-SZ SURVEY." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/622452.
Повний текст джерелаGalvis, Juliana Zapata. "Estimativa das tensões internas e externas atuantes no amostrador SPT durante sua cravação." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-02052016-155809/.
Повний текст джерелаThe Standard Penetration Test (SPT) is one of the in-situ geotechnical tests most used in Brazil, as well as in many parts of the world. Through empirical correlations, the NSPT index is used to estimate parameters of the soil, carrying capacity, discharge of foundations, etc. Because these correlations have no scientific basis, researchers have developed rational methods of analysis, based on energy concepts. Using these concepts, the efficiency of the SPT, which is essential in the analysis of the test results, can be assessed. The amounts of energy involved in the SPT test are evaluated by the EFV method. Therefore, it is necessary instrumented rods with accelerometers and load cells for performing the tests. With force and acceleration records, amounts of energy, experimental dynamic reaction force of the soil, theoretical static and dynamic reaction forces and stresses acting on the sampler were assessed. In this work, as the force and acceleration signals were recorded at an instrumented section just above the sampler, the system efficiency could be determined according to the definition proposed by Cintra and Aoki (2000), including the energy corrections suggested by Odebrecht (2003). In this study, a sample extractor system consisting of a base, a hydraulic cylinder and a load cell was designed. The objective of this equipment is to experimentally quantify the internal friction force, allowing evaluating the stresses acting on the sampler. Also, the Aoki\'s a parameter, which is the ratio of internal friction and external friction between the ground and the sampler, could be calculated.
Cunha, Emanuel Erivan Silva da. "Correla??es entre resultados de ensaios SPT e CPT para solo arenoso sedimentar." PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA CIVIL, 2016. https://repositorio.ufrn.br/jspui/handle/123456789/22135.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
O ensaio SPT ? a ferramenta mais utilizada no Brasil para a obten??o de par?metros geot?cnicos para elabora??o de projetos de funda??o. Em contrapartida o CPTu ainda ? pouco usual, fato explicado pelo pequeno n?mero de empresas que o executam e pelo custo elevado. Logo, ? justificada a busca por correla??es para estimativa de par?metros do ensaio CPTu atrav?s de dados do ensaio SPT. No entanto a grande maioria dos estudos realizados concentram-se no sul e sudeste do pa?s, refor?ando a necessidade da determina??o de correla??es em outras regi?es, considerando as caracter?sticas dos solos locais. O objetivo desse trabalho ? determinar correla??es entre a resist?ncia a penetra??o do ensaio SPT (????) com a resist?ncia de ponta (??) e a resist?ncia lateral (fs) do ensaio CPTu. Utilizando-se ajustes lineares e uma abordagem geoestat?stica simplificada, obtiveram-se correla??es entre 88 sondagens SPT e oito ensaios CPTu para profundidades m?ximas de 22 m, em um dep?sito de areia siltosa na Cidade de Natal, no nordeste do Brasil. Os valores de NSPT utilizados nas correla??es foram corrigidos para energia padr?o internacional de 60%. A sele??o dos dados utilizou crit?rios geoestat?sticos, atrav?s do alcance do variograma para demarca??o da zona de influ?ncia das sondagens, bem como aplica??o de m?todos como IDW e Krigagem ordin?ria.
The standard penetration test (SPT) is the most commonly used in situ test for obtaining the required geotechnical parameters for foundation analysis and design in Brazil. Since in most situations only SPT data is available, the search for new SPT-CPT correlations is necessary. However, most of the available SPT-CPT correlations in Brazil have been established for soils of southern regions of the country. New local correlations for other soil types are therefore necessary. This study aims at determining correlations between the SPT resistance number (NSPT), and the CPT tip resistance (qc) and sleeve friction resistance (fs) for a silty sand deposit at the city of Natal, at the Northeast coast of Brazil. Using linear fittings and a simplified geostatistic approach, correlations were obtained for 88 SPT boreholes and eight CPT boreholes. The NSPT blowcount values where corrected for the energy of 60%. SPT-CPT correlations were devised using the following approaches: variogram analysis, inverse distance weighting (IDW) and ordinary kriging.
Pedrini, Rubens Antonio Amaral. "Desenvolvimento de sistema para sísmica up-hole em conjunto com o ensaio SPT /." Bauru : [s.n.], 2012. http://hdl.handle.net/11449/92971.
Повний текст джерелаBanca: Otávio Coaracy Brasil Gandolfo
Banca: George de Paula Bernardes
Resumo: Este trabalho apresenta o sistema e metodologia para realização e interpretação de ensaios sísmicos up-role durante uma sondagem de simples reconhecimento (SPT). Este ensaio híbrido, conhecido também como S-SPT, incorpora a medida de velocidade de propagação de ondas de cisalhamento (Vs) ao ensaio SPT, visando uma melhor investigação do subsolo. A possibilidade de se medir, ao mesmo tempo e no mesmo furo, os valores de N do SPT e Vs, permitem calcular o módulo de cisalhamento máximo (Go), abrindo uma nova perspectiva para investigação de solos tropicais colapsíveis, a partir da relação Go/N, similar a relação Go/qc. O sistema é composto por um hardware (geofones, trigger e sistema de aquisição de dados) e softwares, um para registro dos sinais sísmicos e outro para sua interpretação. A metodologia de execução dos ensaios foi aperfeiçoada, a partir da realização de várias campanhas de ensaios de campo. Para a interpretação dos sinais e cálculo das velocidades foi elaborado um software, que possibilita definir os perfis de Vs sem a necessidade de outras ferramentas. Esse software possibilita o processamento e visualização dos registros, além de permitir aplicar um método específico para cálculo das velocidades de onda considerando a refração das ondas durante sua propagação através das diversas camadas do meio, conforme a Lei de Snell. Foram realizadas campanhas de ensaios S-SPT em um campo experimental localizado na cidade de Bauru, interior do estado de São Paulo, Brasil, para desenvolver o sistema e validar sua aplicação. Os resultados desses ensaios foram comparados com valores de Vs referência, determinados através de ensaios sísmicos down-hole, tipo SCPT. O ensaio S-SPT mostrou ser uma técnica interessante e aplicável, uma vez que a diferença entre os valores de Vs medidos com os de referência foi baixa, com um valor médio inferior a 10% para as áreas investigadas. Deste modo, pode ser
Abstract: This work presents a system and methodology for performing and interpreting up-hole seismic tests together with the Standard Penetration Test (SPT). This hybrid test, also known as S-SPT, incorporates the measurements of shear waves velocity propagation (Vs) in the SPT, for a better site investigation. The possibility of measuring simultaneously in the same borehole, the N SPT and the Vs values which allows calculating the maximum shear modulus (Go), opens new perspectives for the investigation of collapsible tropical soils, from Go/N ratio, similar to Go/qc. The system consists of a hardware (geophones, trigger and data aquisition system) and software, one to record of the seismic signals and the other for its interpretation. The methodology for carrying out the tests was improved after several field trials. A software was developed for interpretation of records and calculating velocities, which allows to define the Vs profiles without the need of additional tools. This software enables processing and displaying records, and also allows applying a specific method for calculating velocities considering the waves refraction during their propagation through the various layers of the soil mass, according to the Snell's Law. The S-SPT campaigns were carried out in an experimental field located in the city of Bauru, São Paulo, Brazil, to develop the system and validate its application. The results of these tests were compared with Vs reference values, which were determined by the down-hole seismic test, SCPT type. The S-SPT test proved to be an interesting applicable technique, since the differences to the Vs reference values were small, wich and average lower than 10% for the investigated site. The S-SPT test can be considered as an option for determining the maximum shear modulus, with the advantage of being performed together with the most widely used test for site investigation, the SPT
Mestre
Baños, Julieth Paola Quintero. "Modelagem numérica dos fenômenos que ocorrem durante a penetração do amostrador SPT no solo." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-28112016-100400/.
Повний текст джерелаThe Standard Penetration Test (SPT) is one of the most used geotechnical tests in the world. The wide use of this test in the context of geotechnical engineering is due to its simplicity, low cost, large practical experience and its ease of application of results. The main objectives of the test are the determination of soil resistance index (NSPT) and sampling. Despite being widely used in estimating the bearing capacity of foundations, the SPT test has been questioned by the fact that the NSPT index is used in empirical correlations based on practical observations, with no scientific basis. Furthermore, its results show significant dispersions. To analyze rationally the test results and to make possible to compare different results obtained from different equipment, it is necessary to know the amounts of energy existing during the penetration of the sampler into soil. Such analyses require information about the equipment efficiency (η) and the dynamic soil reaction force during the sampler penetration (RD). In this scenario, this work addresses the rational interpretation of SPT test results from numerical simulations performed with the Abaqus/Explicit software. This program provides the sampler displacements (Δρ), the dynamic soil reaction force (RD) and the external and internal reaction forces acting on the sampler walls (R1 e R2). Based on the results of the numerical models, it was possible to calculate the efficiency of the equipment, from the dynamic soil reaction force, the unit friction resistance acting on the sampler walls and the unit resistance at the sampler tip. In addition, it was possible to estimate the relationship between the unit friction resistance acting on the internal and external walls of the sampler (friction factor a). The numerical results were compared with experimental results and theoretical values, obtained using the Hamilton\'s principle of conservation of energy. Furthermore, it was possible to simulate a dynamic load test with increasing energy applied to the sampler, by varying the height of fall of the hammer. It was obtained the confirmation that resistance mobilized for a certain level of energy applied to the sampler may be below the failure load and represent only a point on the graph curve mobilized resistance versus displacement.
Peixoto, Anna Silvia Palcheco 1965. "Estudo do ensaio SPT-T e sua aplicação na prática de engenharia de fundações." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257654.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola
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Doutorado
Rodriguez, Tiago Garcia. "Caracterização geotécnica de um solo de diabásio por meio de ensaios SPT e CPT." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258775.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
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Resumo: A presente dissertação tem por objetivo apresentar a caracterização geotécnica do solo de diabásio do Campo Experimental da Faculdade de Engenharia Civil da Unicamp, por meio de ensaios de campo SPT e CPT. Verificar a adequabilidade dos ensaios as condições do solo tropical, lateritico, típico da região de Campinas, por meio de proposicoes de classificação de comportamento de solos e da estimativa de parâmetros geotécnicos, assim como as possíveis correlações, teóricas e empíricas, entre os dois ensaios. Foram utilizados ensaios de cone, mecânico e elétrico, e ensaios SPT com medição de energia. As propostas para classificações dos tipos de solo, através do CPT, utilizadas indicaram duas camadas distintas a primeira de solos de comportamento arenosos a silto-arenosos e a segunda de solos de comportamento siltosos a siltoargilosos, em concordância com a classificação obtida em laboratório. As proposicoes utilizadas para estimativa de parâmetros geotécnicos tiveram que ser ajustadas para o solo do campo experimental. A correlação (qc/pa)/N60 obtida foi de 4 para o solos coluvionar (areno-siltoso) e 2,5 para o solo residual (siltoso) em concordância com os valores encontrados na literatura
Abstract: The purpose of this dissertation is to present the geotechnical characterization of the diabasic soil of the Experimental Field of the Unicamp School of Civil Engineering by means of SPT and CPT field trials, and to check the adequacy of such trials to the conditions of the tropical, lateritic soil, which is typical of the Campinas region by means of propositions to classify the behavior of the soils and estimation of geotechnical parameters, as well as possible theoretical and empirical correlations between the two trials. Cone, mechanical and electrical trials were used as well as SPT trials with measurement of energy. The proposals used to classify the types of soil via CPT indicated two separate layers: the first one with soils with sandy to silty-sandy behavior, and the second layer of soils with silty to silty-clayey behavior, in agreement with the laboratory classification. The propositions used to estimate the geotechnical parameters had to be adjusted to the soil of the experimental field. The correlation (qc/pa)/N60 obtained was 4 for colluvial soil (sandy-silty), and 2.5 for residual soil (silty) in agreement with the values found in the literature
Mestrado
Geotecnia
Mestre em Engenharia Civil
Saro, A., S. Bocquet, J. Mohr, E. Rozo, B. A. Benson, S. Dodelson, E. S. Rykoff, et al. "Optical-SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey." OXFORD UNIV PRESS, 2017. http://hdl.handle.net/10150/624426.
Повний текст джерелаBeattie, Ashley Emily. "Mechanistic studies of the pyridoxal 5'-phosphate-dependent enzyme serine palmitoyltransferase : substrates, cofactor and inhibitors." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/10059.
Повний текст джерелаROCHA, Dalton Davis Favacho da. "A relação executivo-legislativo no projeto de criação da Superintendência do Planejamento Territorial Participativo (SPTP) no Estado do Pará." Universidade Federal do Pará, 2012. http://repositorio.ufpa.br/jspui/handle/2011/4994.
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Este trabalho abordou a relação Executivo–Legislativo no Estado do Pará através do Projeto de Lei 01/2008 que implantaria a Superintendência do Planejamento Territorial Participativo (SPTP), durante a 16ª Legislatura da Assembleia Legislativa do Pará no período 2007-2010. Elaborado pelo Governo do Estado, o projeto previa a implantação de uma instituição que coordenaria o processo de participação popular e controle social proposto pelo governo Ana Júlia Carepa no início de seu governo. Como problemática, a pesquisa abordou a rejeição pelos parlamentares ao referido projeto, cuja questão de pesquisa foi a seguinte: que fatores contribuiram para a rejeição do Projeto de criação da SPTP pelo Poder Legislativo? Além disso, o que ela significa na relação Executivo–Legislativo segundo a literatura corrente. As hipóteses inferidas seriam as de que a rejeição foi motivada pela própria relação conflituosa entre Executivo e Legislativo na arena parlamentar ou pela percepção do conflito de interesses dos atores políticos locais quanto às fronteiras de atuação entre instituições políticas participativas e instituições políticas representativas. Os deputados contrários ao projeto não consideravam a SPTP enquanto prática efetiva de gestão democrática, mas suspeitavam que a mesma, por exemplo, pudesse estar vinculada a estratégias por parte do Executivo para fins eleitorais ou de barganha perante o Legislativo. O Desenvolvimento da pesquisa concentrou-se na busca pelas respostas a problemática apresentada bem como verificar a validade das hipótese inferidas. Quanto ao objetivo se avaliou o comportamento dos deputados na tramitação do projeto de criação da SPTP. Como ferramentas de pesquisas foram utilizadas pesquisas bibliográficas e empíricas.
This study addressed the Executive-Legislative relations in Pará through Bill 01/2008 implantaria that the Superintendency of Participative Territorial Planning (SPTP), during the 16th Legislature of the Legislative Assembly of Pará in the period 2007-2010. Prepared by the State Government, the project included the establishment of an institution that would coordinate the process of popular participation and social control proposed by the government Ana Júlia Carepa early in his administration. How problematic, the study addressed the rejection by parliament to that project, whose research question was: what factors contributed to the rejection of the project of creating the SPTP by the Legislature? Moreover, what it means in Executive-Legislative relations according to the current literature. The hypotheses would be inferred that the rejection was motivated by the conflicting relationship between the Executive and Legislature in the parliamentary arena or the perception of conflict of interest of local political actors as to the boundaries of performance between political institutions and participatory representative political institutions. Members opposed to the project did not consider SPTP while effective practice democratic management, but suspected the same, for example, could be linked to strategies by the Executive for electoral purposes or bargaining before the Legislature. The development of the research has focused on the search for answers to issues presented and to verify the validity of the hypothesis inferred. As for the goal we evaluated the behavior of MPs in the course of the project to create the SPTP. As research tools were used and empirical literature searches.
Silva, Bruno Canoza da. "Estimativa da capacidade de carga à tração de estacas helicoidais com base no ensaio SPT." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-04122014-091716/.
Повний текст джерелаThe pile capacity in Brazil is usually predicted by semi-empirical methods based on direct correlations between SPT-N values and pile shaft and pile base resistance. However, the uplift capacity of helical piles is still calculated using theoretical methods based on soil parameters, as: cohesion, unit weight, friction angle, and lateral earth pressure coefficient. In this case, these parameters are obtained indirectly from correlations with values of SPT-N. This dissertation was inspired by the need of a more appropriate method to calculate the uplift capacity of helical piles, by correlating the capacity of the bearing plates directly with the soil type and SPT-N values. In this work, it was developed a semi-empirical method for estimating the pullout capacity of deep helical piles by using SPT test results, similarly to the other methods used for conventional piles. Also, this work presents some results of torque factor, obtained by statistical analysis, to the verification of the pile capacity by using the torque recorded at the end of pile installation. In this research, it was performed several statistical analysis to obtain appropriate models to estimate the uplift capacity of helical piles. The cases of helical piles used in this investigation are classified into groups according to the soil type and the number of helices. As a result, detailed evaluations and recommendations for improvement of helical pile design are presented. The proposed model is recommended to calculate the uplift capacity of helical piles installed in similar soils to that used in this study.
Kirk, D., Y. Omori, A. Benoit-Lévy, R. Cawthon, C. Chang, P. Larsen, A. Amara, et al. "Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing." OXFORD UNIV PRESS, 2016. http://hdl.handle.net/10150/614994.
Повний текст джерелаFolle, Daiane. "O estudo geoestatístico de sondagens SPT para geração de mapas auxiliares em obras de engenharia." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2002. http://hdl.handle.net/10183/2980.
Повний текст джерела