951 resultados para post-biosynthetic events
Resumo:
The main theme running through these three chapters is that economic agents are often forced to respond to events that are not a direct result of their actions or other agents actions. The optimal response to these shocks will necessarily depend on agents' understanding of how these shocks arise. The economic environment in the first two chapters is analogous to the classic chain store game. In this setting, the addition of unintended trembles by the agents creates an environment better suited to reputation building. The third chapter considers the competitive equilibrium price dynamics in an overlapping generations environment when there are supply and demand shocks.
The first chapter is a game theoretic investigation of a reputation building game. A sequential equilibrium model, called the "error prone agents" model, is developed. In this model, agents believe that all actions are potentially subjected to an error process. Inclusion of this belief into the equilibrium calculation provides for a richer class of reputation building possibilities than when perfect implementation is assumed.
In the second chapter, maximum likelihood estimation is employed to test the consistency of this new model and other models with data from experiments run by other researchers that served as the basis for prominent papers in this field. The alternate models considered are essentially modifications to the standard sequential equilibrium. While some models perform quite well in that the nature of the modification seems to explain deviations from the sequential equilibrium quite well, the degree to which these modifications must be applied shows no consistency across different experimental designs.
The third chapter is a study of price dynamics in an overlapping generations model. It establishes the existence of a unique perfect-foresight competitive equilibrium price path in a pure exchange economy with a finite time horizon when there are arbitrarily many shocks to supply or demand. One main reason for the interest in this equilibrium is that overlapping generations environments are very fruitful for the study of price dynamics, especially in experimental settings. The perfect foresight assumption is an important place to start when examining these environments because it will produce the ex post socially efficient allocation of goods. This characteristic makes this a natural baseline to which other models of price dynamics could be compared.
Resumo:
This thesis describes the active structures of Myanmar and its surrounding regions, and the earthquake geology of the major active structures. Such investigation is needed urgently for this rapidly developing country that has suffered from destructive earthquakes in its long history. To archive a better understanding of the regional active tectonics and the seismic potential in the future, we utilized a global digital elevation model and optical satellite imagery to describe geomorphologic evidence for the principal neotectonic features of the western half of the Southeast Asia mainland. Our investigation shows three distinct active structural systems that accommodate the oblique convergence between the Indian plate and Southeast Asia and the extrusion of Asian territory around the eastern syntaxis of the Himalayan mountain range. Each of these active deformation belts can be further separated into several neotectonic domains, in which structures show distinctive active behaviors from one to another.
In order to better understand the behaviors of active structures, we focused on the active characteristics of the right-lateral Sagaing fault and the oblique subducting northern Sunda megathrust in the second part of this thesis. The detailed geomorphic investigations along these two major plate-interface faults revealed the recent slip behavior of these structures, and plausible recurrence intervals of major seismic events. We also documented the ground deformation of the 2011 Tarlay earthquake in remote eastern Myanmar from remote sensing datasets and post-earthquake field investigations. The field observation and the remote sensing measurements of surface ruptures of the Tarlay earthquake are the first study of this kind in the Myanmar region.
Resumo:
A long-standing challenge in transition metal catalysis is selective C–C bond coupling of simple feedstocks, such as carbon monoxide, ethylene or propylene, to yield value-added products. This work describes efforts toward selective C–C bond formation using early- and late-transition metals, which may have important implications for the production of fuels and plastics, as well as many other commodity chemicals.
The industrial Fischer-Tropsch (F-T) process converts synthesis gas (syngas, a mixture of CO + H2) into a complex mixture of hydrocarbons and oxygenates. Well-defined homogeneous catalysts for F-T may provide greater product selectivity for fuel-range liquid hydrocarbons compared to traditional heterogeneous catalysts. The first part of this work involved the preparation of late-transition metal complexes for use in syngas conversion. We investigated C–C bond forming reactions via carbene coupling using bis(carbene)platinum(II) compounds, which are models for putative metal–carbene intermediates in F-T chemistry. It was found that C–C bond formation could be induced by either (1) chemical reduction of or (2) exogenous phosphine coordination to the platinum(II) starting complexes. These two mild methods afforded different products, constitutional isomers, suggesting that at least two different mechanisms are possible for C–C bond formation from carbene intermediates. These results are encouraging for the development of a multicomponent homogeneous catalysis system for the generation of higher hydrocarbons.
A second avenue of research focused on the design and synthesis of post-metallocene catalysts for olefin polymerization. The polymerization chemistry of a new class of group 4 complexes supported by asymmetric anilide(pyridine)phenolate (NNO) pincer ligands was explored. Unlike typical early transition metal polymerization catalysts, NNO-ligated catalysts produce nearly regiorandom polypropylene, with as many as 30-40 mol % of insertions being 2,1-inserted (versus 1,2-inserted), compared to <1 mol % in most metallocene systems. A survey of model Ti polymerization catalysts suggests that catalyst modification pathways that could affect regioselectivity, such as C–H activation of the anilide ring, cleavage of the amine R-group, or monomer insertion into metal–ligand bonds are unlikely. A parallel investigation of a Ti–amido(pyridine)phenolate polymerization catalyst, which features a five- rather than a six-membered Ti–N chelate ring, but maintained a dianionic NNO motif, revealed that simply maintaining this motif was not enough to produce regioirregular polypropylene; in fact, these experiments seem to indicate that only an intact anilide(pyridine)phenolate ligated-complex will lead to regioirregular polypropylene. As yet, the underlying causes for the unique regioselectivity of anilide(pyridine)phenolate polymerization catalysts remains unknown. Further exploration of NNO-ligated polymerization catalysts could lead to the controlled synthesis of new types of polymer architectures.
Finally, we investigated the reactivity of a known Ti–phenoxy(imine) (Ti-FI) catalyst that has been shown to be very active for ethylene homotrimerization in an effort to upgrade simple feedstocks to liquid hydrocarbon fuels through co-oligomerization of heavy and light olefins. We demonstrated that the Ti-FI catalyst can homo-oligomerize 1-hexene to C12 and C18 alkenes through olefin dimerization and trimerization, respectively. Future work will include kinetic studies to determine monomer selectivity by investigating the relative rates of insertion of light olefins (e.g., ethylene) vs. higher α-olefins, as well as a more detailed mechanistic study of olefin trimerization. Our ultimate goal is to exploit this catalyst in a multi-catalyst system for conversion of simple alkenes into hydrocarbon fuels.
Resumo:
The geology and structure of two crustal scale shear zones were studied to understand the partitioning of strain within intracontinental orogenic belts. Movement histories and regional tectonic implications are deduced from observational data. The two widely separated study areas bear the imprint of intense Late Mesozoic through Middle Cenozoic tectonic activity. A regional transition from Late Cretaceous-Early Tertiary plutonism, metamorphism, and shortening strain to Middle Tertiary extension and magmatism is preserved in each area, with contrasting environments and mechanisms. Compressional phases of this tectonic history are better displayed in the Rand Mountains, whereas younger extensional structures dominate rock fabrics in the Magdalena area.
In the northwestern Mojave desert, the Rand Thrust Complex reveals a stack of four distinctive tectonic plates offset along the Garlock Fault. The lowermost plate, Rand Schist, is composed of greenschist facies metagraywacke, metachert, and metabasalt. Rand Schist is structurally overlain by Johannesburg Gneiss (= garnet-amphibolite grade orthogneisses, marbles and quartzites), which in turn is overlain by a Late Cretaceous hornblende-biotite granodiorite. Biotite granite forms the fourth and highest plate. Initial assembly of the tectonic stack involved a Late Cretaceous? south or southwest vergent overthrusting event in which Johannesburg Gneiss was imbricated and attenuated between Rand Schist and hornblende-biotite granodiorite. Thrusting postdated metamorphism and deformation of the lower two plates in separate environments. A post-kinematic stock, the Late Cretaceous Randsburg Granodiorite, intrudes deep levels of the complex and contains xenoliths of both Rand Schist and mylonitized Johannesburg? gneiss. Minimum shortening implied by the map patterns is 20 kilometers.
Some low angle faults of the Rand Thrust Complex formed or were reactivated between Late Cretaceous and Early Miocene time. South-southwest directed mylonites derived from Johannesburg Gneiss are commonly overprinted by less penetrative north-northeast vergent structures. Available kinematic information at shallower structural levels indicates that late disturbance(s) culminated in northward transport of the uppermost plate. Persistence of brittle fabrics along certain structural horizons suggests a possible association of late movement(s) with regionally known detachment faults. The four plates were juxtaposed and significant intraplate movements had ceased prior to Early Miocene emplacement of rhyolite porphyry dikes.
In the Magdalena region of north central Sonora, components of a pre-Middle Cretaceous stratigraphy are used as strain markers in tracking the evolution of a long lived orogenic belt. Important elements of the tectonic history include: (1) Compression during the Late Cretaceous and Early Tertiary, accompanied by plutonism, metamorphism, and ductile strain at depth, and thrust driven? syntectonic sedimentation at the surface. (2) Middle Tertiary transition to crustal extension, initially recorded by intrusion of leucogranites, inflation of the previously shortened middle and upper crustal section, and surface volcanism. (3) Gravity induced development of a normal sense ductile shear zone at mid crustal levels, with eventual detachment and southwestward displacement of the upper crustal stratigraphy by Early Miocene time.
Elucidation of the metamorphic core complex evolution just described was facilitated by fortuitous preservation of a unique assemblage of rocks and structures. The "type" stratigraphy utilized for regional correlation and strain analysis includes a Jurassic volcanic arc assemblage overlain by an Upper Jurassic-Lower Cretaceous quartz pebble conglomerate, in turn overlain by marine strata with fossiliferous Aptian-Albian limestones. The Jurassic strata, comprised of (a) rhyolite porphyries interstratified with quartz arenites, (b) rhyolite cobble conglomerate, and (c) intrusive granite porphyries, are known to rest on Precambrian basement north and east of the study area. The quartz pebble conglomerate is correlated with the Glance Conglomerate of southeastern Arizona and northeastern Sonora. The marine sequence represents part of an isolated arm? of the Bisbee Basin.
Crosscutting structural relationships between the pre-Middle Cretaceous supracrustal section, younger plutons, and deformational fabrics allow the tectonic sequence to be determined. Earliest phases of a Late Cretaceous-Early Tertiary orogeny are marked by emplacement of the 78 ± 3 Ma Guacomea Granodiorite (U/Pb zircon, Anderson et al., 1980) as a sill into deep levels of the layered Jurassic series. Subsequent regional metamorphism and ductile strain is recorded by a penetrative schistosity and lineation, and east-west trending folds. These fabrics are intruded by post-kinematic Early Tertiary? two mica granites. At shallower crustal levels, the orogeny is represented by north directed thrust faulting, formation of a large intermontane basin, and development of a pronounced unconformity. A second important phase of ductile strain followed Middle Tertiary? emplacement of leucogranites as sills and northwest trending dikes into intermediate levels of the deformed section (surficial volcanism was also active during this transitional period to regional extension). Gravitational instabilities resulting from crustal swelling via intrusion and thermal expansion led to development of a ductile shear zone within the stratigraphic horizon occupied by a laterally extensive leucogranite sill. With continued extension, upper crustal brittle normal faults (detachment faults) enhanced the uplift and tectonic denudation of this mylonite zone, ultimately resulting in southwestward displacement of the upper crustal stratigraphy.
Strains associated with the two ductile deformation events have been successfully partitioned through a multifaceted analysis. R_f/Ø measurements on various markers from the "type" stratigraphy allow a gradient representing cumulative strain since Middle Cretaceous time to be determined. From this gradient, noncoaxial strains accrued since emplacement of the leucogranites may be removed. Irrotational components of the postleucogranite strain are measured from quartz grain shapes in deformed granites; rotational components (shear strains) are determined from S-C fabrics and from restoration of rotated dike and vein networks. Structural observations and strain data are compatable with a deformation path of: (1) coaxial strain (pure shear?), followed by (2) injection of leucogranites as dikes (perpendicular to the minimum principle stress) and sills (parallel to the minimum principle stress), then (3) southwest directed simple shear. Modeling the late strain gradient as a simple shear zone permits a minimum displacement of 10 kilometers on the Magdalena mylonite zone/detachment fault system. Removal of the Middle Tertiary noncoaxial strains yields a residual (or pre-existing) strain gradient representative of the Late Cretaceous-Early Tertiary deformation. Several partially destrained cross sections, restored to the time of leucogranite emplacement, illustrate the idea that the upper plate of the core complex bas been detached from a region of significant topographic relief. 50% to 100% bulk extension across a 50 kilometer wide corridor is demonstrated.
Late Cenozoic tectonics of the Magdalena region are dominated by Basin and Range style faulting. Northeast and north-northwest trending high angle normal faults have interacted to extend the crust in an east-west direction. Net extension for this period is minor (10% to 15%) in comparison to the Middle Tertiary detachment related extensional episode.
Resumo:
FGF/Erk MAP Kinase Signaling is a central regulator of mouse embryonic stem cell (mESC) self-renewal, pluripotency and differentiation. However, the mechanistic connection between this signaling pathway activity and the gene circuits stabilizing mESCs in vitro remain unclear. Here we show that FGF signaling post-transcriptionally regulates the mESC transcription factor network by controlling the expression of Brf1 (zfp36l1), an AU-rich element mRNA binding protein. Changes in Brf1 level disrupts the expression of core pluripotency-associated genes and attenuates mESC self-renewal without inducing differentiation. These regulatory effects are mediated by rapid and direct destabilization of Brf1 targets, such as Nanog mRNA. Interestingly, enhancing Brf1 expression does not compromise mESC pluripotency, but does preferentially regulate differentiation to mesendoderm by accelerating the expression of primitive streak markers. Together, these studies demonstrate that FGF signals utilize targeted mRNA degradation by Brf1 to enable rapid post-transcriptional control of gene expression.
Resumo:
In this thesis I present a study of W pair production in e+e- annihilation using fully hadronic W+W- events. Data collected by the L3 detector at LEP in 1996-1998, at collision center-of-mass energies between 161 and 189 GeV, was used in my analysis.
Analysis of the total and differential W+W- cross sections with the resulting sample of 1,932 W+W- → qqqq event candidates allowed me to make precision measurements of a number of properties of the W boson. I combined my measurements with those using other W+W- final states to obtain stringent constraints on the W boson's couplings to fermions, other gauge bosons, and scalar Higgs field by measuring the total e+e- → W+W- cross section and its energy dependence
σ(e+e- → W+W-) =
{2.68+0.98-0.67(stat.)± 0.14(syst.) pb, √s = 161.34 GeV
{12.04+1.38-1.29(stat.)± 0.23(syst.) pb, √s = 172.13 GeV
{16.45 ± 0.67(stat.) ± 0.26(syst.) pb, √s = 182.68 GeV
{16.28 ± 0.38(stat.) ± 0.26(syst.) pb, √s = 188.64 GeV
the fraction of W bosons decaying into hadrons
BR(W →qq') = 68.72 ± 0.69(stat.) ± 0.38(syst.) %,invisible non-SM width of the W boson
ΓinvisibleW less than MeV at 95% C.L.,the mass of the W boson
MW = 80.44 ± 0.08(stat.)± 0.06(syst.) GeV,the total width of the W boson
ΓW = 2.18 ± 0.20(stat.)± 0.11(syst.) GeV,the anomalous triple gauge boson couplings of the W
ΔgZ1 = 0.16+0.13-0.20(stat.) ± 0.11(syst.)
Δkγ = 0.26+0.24-0.33(stat.) ± 0.16(syst.)
λγ = 0.18+0.13-0.20(stat.) ± 0.11(syst.)
No significant deviations from Standard Model predictions were found in any of the measurements.
Resumo:
The anisotropy of 1.3 - 2.3 MeV protons in interplanetary space has been measured using the Caltech Electron/Isotope Spectrometer aboard IMP-7 for 317 6-hour periods from 72/273 to 74/2. Periods dominated by prompt solar particle events are not included. The convective and diffusive anisotropies are determined from the observed anisotropy using concurrent solar wind speed measurements and observed energy spectra. The diffusive flow of particles is found to be typically toward the sun, indicating a positive radial gradient in the particle density. This anisotropy is inconsistent with previously proposed sources of low-energy proton increases seen at 1 AU which involve continual solar acceleration.
The typical properties of this new component of low-energy cosmic rays have been determine d for this period which is near solar minimum. The particles have a median intensity of 0.06 protons/ cm^(2)-sec-sr-MeV and a mean spectral index of -3.15.The amplitude of the diffusive anisotropy is approximately proportional to the solar wind speed. The rate at which particles are diffusing toward the sun is larger than the rate at which the solar wind is convecting the particles away from the sun. The 20 to 1 proton to alpha ratio typical of this new component has been reported by Mewaldt, et al. (1975b).
A propagation model with κ_(rr) assumed independent of radius and energy is used to show that the anisotropy could be due to increases similar to those found by McDonald, et al. (1975) at ~3 AU. The interplanetary Fermi-acceleration model proposed by Fisk (1976) to explain the increases seen near 3 AU is not consistent with the ~12 per cent diffusive anisotropy found.
The dependence of the diffusive anisotropy on various parameters is shown. A strong dependence of the direction of the diffusive anisotropy on the concurrently measured magnetic field direction is found, indicating a κ_⊥ less than κ_∥ to be typical for this large data set.
Resumo:
This article reports on the success of reintroducing native crayfish (Austropotamobius pallipes) in the Sherston and Tetbury Avon, following extinction of the population from crayfish plague. The authors describe and review the survey methods that were used and identify a survey technique that was found to be the most rapid and robust for monitoring crayfish populations. Such a survey technique could be adopted as a standard method.
Resumo:
The article compares a recent aerial photograph of the lowlands of the Isle of Anglesey area with a German surveillance photograph from 1941. The authors aim to infer the environmental changes made to this sand dune and lake system as a direct consequence of constructing the airfield. Part of Tywyn Trewan, the extensive sand dune system, was completely destroyed in order to create runways and the technical and domestic accommodation to house a strategic airfield. As part of the dredging, six new water bodies with a combined surface area of approximately 6 ha were created.
Resumo:
A taxa de controle da hipertensão arterial permanece subótima apesar dos amplos e intensos programas institucionais e o número das novas medicações. A combinação de drogas de diferentes mecanismos de ação vem se tornando uma alternativa para aumentar a redução na pressão arterial (PA) e aumentar seu controle, aumentar aderência ao tratamento e reduzir os eventos adversos. Um estudo fatorial 4X4 foi desenhado para determinar a eficácia e a segurança de telmisartana (T) mais anlodipino (A) em pacientes hipertensos estágios I e II. Pacientes hipertensos adultos (N=1461) estágios I e II (pressão arterial basal 153,212,1 ⁄101,74,3 mm Hg) foram randomizados para 1 de 16 grupos de tratamento com T 0, 20, 40, 80 mg e A 0, 2.5, 5, 10 mg por oito semanas. A maior redução na média das pressões sistólica e diastólica foram observadas com T 80 mg mais A10 mg (- 26,4 ⁄20,1 mm Hg; p<0,05 comparados com as monoterapias). A taxa de controle da PA foi também maior no grupo T 80mg mais A 10mg (76,5% [controle total] e 85,3% [controle da PA diastólica ]), e taxa de controle da PA >90% com esta combinação. O edema periférico maleolar foi o evento adverso mais frequente e ocorreu no grupo A 10mg (17,8%), porém, esta taxa foi marcadamente menor quando A foi usada associada com T: 11,4% (T20+A10), 6,2% (T40+ A10), e 11,3% (T80+A10). Um subestudo utilizando a monitorização ambulatorial da pressão arterial (MAPA) foi realizado na fase basal e após oito semanas de tratamento. A maior redução média das pressões nas 24 horas a partir do período basal foi registrada para a combinação de telmisartana 80 mg e anlodipino 10 mg e encontrou-se queda de 22,4/14,6 mmHg, de 11,9/6,9 mmHg para anlodipino 10 mg monoterapia e de 11,0/6,9 mmHg para telmisartana 80 mg (p< 0,001). Além disso, resultados relevantes foram também constatados numa análise post hoc de subgrupos incluindo idosos, obesos, diabéticos tipo 2 e hipertensão sistólica. A resposta anti-hipertensiva da combinação foi semelhante, independente de qualquer característica de cada subgrupo. Estes dados demonstram que telmisartana e anlodipino em combinação oferecem substancial redução e controle nas 24 horas superior às respectivas monoterapias em hipertensos estágios I e II.
Resumo:
Studies by the Freshwater Biological Association over the last 25 years have supplied data relevant to the levels of acidity in local soils and water before the onset of industrial pollution and current interest in acid rain. This article reviews published analysis from cores of lake sediments, in or near the catchment of the River Duddon. Electron spin resonance spectra of humic acids and iodine values confirm evidence from pollen analysis for a history of progressive acidification of the source material of lake sediments since before 5000 radiocarbon years, in upland catchments of the Lake District. Processes involved included: removal of basic ions from soils by rainfall, the effects of which were intensified by removal by man of deciduous forest; acidification of soils and waters by decomposition products of Calluna and further acidification of waters by Sphagnum species which colonized habitats where drainage became impeded by paludification processes.
Resumo:
Esta pesquisa teve por objetivo abrir uma discussão sobre o papel do esporte contemporâneo junto ao processo de alienação humana em tempos de domínio do capitalismo monopolista e do fortalecimento da ideologia dominante. Para tal, no primeiro capítulo, analisou-se as principais transformações vividas historicamente pelo capitalismo com a intenção de identificar o impacto do capitalismo monopolista sobre o novo ordenamento da humanidade. No segundo capítulo, demonstrou-se como o esporte contemporâneo constituiu-se como uma instituição burguesa, socialmente determinada e integrada ao conjunto de normas, ideias e estratégias inerentes ao modo de produção capitalista, participando do processo de mascaramento da questão social. Destaca-se neste capítulo o uso de fontes documentais que demonstraram como o esporte contemporâneo tem ocupado lugar estratégico tanto junto à produção da ideologia dominante, quanto junto ao controle da queda da taxa de lucro. Identificou-se que sob tais condições o esporte contemporâneo compõe os processos compensatórios frente à queda tendencial da taxa de lucro e, ao mesmo tempo, integra-se ao processo de alienação humana, tendo por maior expressão a sua materialização sob a forma dos megaeventos esportivos. Neste ponto, a pesquisa concentra-se na análise dos megaeventos esportivos no Brasil e na criação das políticas do esporte, desde o primeiro governo Lula da Silva até os dias atuais. Identificou-se que os projetos de desenvolvimento do esporte no país, no período em tela, têm participado do processo de gerenciamento da crise do capital e do refluxo das lutas dos trabalhadores. O último capítulo abordou as particularidades que envolvem a ideologia pós-moderna, tendo por objetivo identificar as relações desta com fenômeno esportivo. Constatou-se que, em tempos de domínio do capitalismo monopolista e de suas políticas neoliberais, as contradições que aguçam o processo de alienação sob o qual encontra-se a classe trabalhadora de todo o mundo, coloca a humanidade em um novo patamar de alienação, ainda mais brutal e desumanizador. Nesta conjuntura, o esporte contemporâneo destaca-se por ser funcional tanto ao mercado globalizado, quanto ao projeto imperialista, impondo-se como instrumento da contenção de conflitos em nome da tolerância e da paz no mundo. A presente pesquisa pôde concluir que as condições impostas pela fase monopolista do capitalismo ocultam a natureza dialética do esporte transforma-o num instrumento eficiente ao projeto dominante de incremento da alienação humana. O esporte, sob a forma assumida na contemporaneidade, não contribui para o avanço da consciência da classe trabalhadora, pois vem colaborando para adiamento do projeto de emancipação da humanidade. Projeto este que só será produzido pela organização consciente da classe trabalhadora em busca da superação do modo de produção capitalista.
Resumo:
Esse trabalho aborda a elaboração de requisitos dos usuários como parte da adequação do sistema de informação-SISTEMA DE INFORMAÇÃO DE GESTÃO ACADÊMICA-Administrativo- SIGA-Adm, proposto para o Hospital Universitário da Universidade Federal de Juiz de Fora. SIGA-Adm está em utilização, desde 2007, na Universidade Federal de Juiz de Fora. No entanto, para a efetiva aplicabilidade no âmbito do Hospital Universitário, torna-se necessário uma investigação acerca dos processos de trabalho, dentro do HU e uma ação de melhoria desses processos, a fim de evitar a incorporação de um sistema de informação que não corresponda a realidade apresentada. A elaboração dos requisitos dos usuários para a adequação visa a ser um instrumento de intermediação para discussão acerca da elaboração do SIGA-Adm para o HU/UFJF. Os requisitos apresentados originaram-se no processo de gerenciamento de materiais, como resultado da utilização da Metodologia de Análise e Melhoria de Processos-MAMP, aplicada na cadeia de suprimentos do Hospital Universitário, no período de 2004 a 2005. O acompanhamento do gerenciamento de materiais é uma estratégia utilizada pela Rede Sentinela para o desenvolvimento de ações de pós-comercialização de produtos para a saúde tais como: investigação de uso, registro de produtos, retirada de produto do mercado e etc... O Hospital Universitário da UFJF é integrante da Rede Brasileira de Hospitais Sentinela, implementada pela Agência Nacional de Vigilância Sanitária, desde 2001. As ações Pós-Comercialização de Produtos para a Saúde, em Tecnovigilância, são compartilhadas pela ANVISA e pelos integrantes da Rede Sentinela, através de informações relativas a queixas técnicas e/ou eventos adversos que possam causar algum dano à população. A pesquisa indica a possibilidade do SIGA-Adm armazenar informações sobre os produtos que permitam o rastreamento em condições normais e/ou anormais de uso pela instituição, contribuindo para o exercício em Tecnovigilância. Além disso, espera-se que construção do SIGA-Adm/HU-UFJF permita integrar os sistemas existentes no HU.