868 resultados para Chain of custody of traces


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Dissertao que pesquisa o desdobramento de espetculos teatrais em imagens de potencial plstico fecundo na interao entre a cenografia e as artes visuais. Estudos de caso de obras de Robert Wilson que elaboram as questes da tenso entre a fico e a biografia, alm de abordar imagem, corpo, movimento e espacialidade. Desenvolve-se em anlise das posturas do espao quando atravessado por trabalhos que promovem o pensamento acerca da imobilidade e de seu contrrio. A reprodutibilidade esteticamente explorada observada enquanto elemento fundamental na proposta que trata a disponibilidade do corpo justaposta imagtica que este capaz de produzir. Na anlise aparecem alguns materiais - imagens - resultantes de processos artsticos de Robert Wilson bem como de outros artistas como Marina Abramovic e Rineke Djcstra. Estruturado no encadeamento de imagens partcipes de processos de construo e conduo de performances artsticas que abrangem as perspectivas da colaborao imagtica incorporada ao pensamento criativo que recondiciona o corpo no campo da superficialidade enquanto abrangncia potica

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Somente poderiam advir novas formas de existncia, outros modos de ser e estar no mundo, se diferentes sensibilidades tambm acompanhassem o desdobrar de um determinado acontecimento. Esta pesquisa tem como objeto privilegiado os acontecimentos de criao da escola na sua relao com as visibilidades de mundo, fazendo-se ela mesma em preparao e ressurgncia de um acontecimento de criao. Inicialmente seria fundamental pesquisa envolver-se nos cotidianos do colgio estudado para melhor pensar a via de preparao do acontecimento. Tal feita somente poderia adquirir sentido se o dispositivo investigativo mantivesse seus investimentos ao nvel do contato com estudantes, esforando-se por garantir a maior participao deles em diferentes aspectos da preparao, acentuando a partir de nossos encontros potncia de criao evenemencial. Ceder aos indcios durante a preparao significaria aprofundar os vnculos que mantive com a comunidade escolar. E, tendo como principal convite a fotografia, os estudantes realizaram um nmero significativo de imagens do colgio que, ao final de um extenso perodo, nos conduziu ocupao imagtica do espao escolar. Num segundo momento a pesquisa se voltou para o modo de apreenso do acontecimento por parte de toda a comunidade em meio ocupao do espao escolar a partir de suas imagens. Composta por oitenta e uma fotografias do espao escolar, a ocupao concentrou parte destas imagens em uma instalao confeccionada por fios vermelhos no centro do primeiro pavimento, distribuindo o restante delas por entre paredes, banheiros e corredores. Esta apreenso se fez compreendida pelo dispositivo sob os termos de um profundo engajamento com o campo problemtico do acontecimento, tendo como ndice o destino investido pelas imagens, prolongando seno os efeitos evenemenciais em franca atualizao dos gestos, superfcies e visibilidades. Procurei pensar a multiplicidade de relaes estabelecidas entre a comunidade escolar e as imagens fotogrficas em meio ocupao imagtica realizada no colgio, tomando a sua apario momentnea como acontecimento de criao, assim como a ressurgncia de outras visibilidades presididas em seus contextos. Para tanto, pesquisa precisou se tornar esta ntima criao de uma obra de aprendizagem.

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A pesquisa teve como objetivo conhecer o processo de formao de um sujeito comum: Jos Luiz da Silva, ararunense (PB), nascido em 1929, oriundo de famlia de classe popular. Para isso, combinou duas fontes possveis em estudos envolvendo os protagonistas annimos da Histria: seus relatos orais de vida construdos em situao de entrevista e suas escritas ordinrias, buscando identificar marcas de escolarizao nesses materiais e suas possveis ausncias , produzidas pelos modelos praticados em contextos escolares, assim como dificuldades enfrentadas por quem foi privado do direito educao escolar, e que aprendeu a ler e a escrever em outros espaos. Por meio desses fundamentos indispensveis para o desenvolvimento de aprendizagens, aventurou-se construo de conhecimentos de forma pessoal, sobretudo, pela leitura. O estudo (auto)biogrfico revelou parte das interdies sofridas, em um Estado republicano, destacando perodos cruciais que atravessaram a trajetria do colaborador, percebidos a contrapelo. As narrativas construdas durante os encontros dialgicos permitiram entrar em contato com memrias e subjetividades inerentes ao processo identitrio do sujeito, bem como aproximar-me da complexidade que envolveu seu processo de construo de conhecimento nas prticas sociais, medida que durante as construes narrativas apoderou-se de seus territrios de passagem. A proposta indiciria contribuiu na percepo e apreenso de detalhes reveladores do processo de formao do sujeito e dos usos que fez de tticas, na condio de subalternidade imposta pelos modelos hegemnicos. A pesquisa favoreceu-se, apesar da falta de objetos-monumentos das passagens escolares, do transbordamento da memria de um cidado octogenrio. As experincias (re)construdas pelo Sr. Jos Luiz revelaram aspectos que se assemelham a histrias de vida de outros sujeitos adultos: no momento em que o direito educao na infncia lhes negado, (re)inventam outras formas de aprender e de participar da sociedade da cultura escrita

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Mucetin (Trimeresurus mucrosquamatus venom activator, TMVA) is a potent platelet activator purified from Chinese habu (Trimeresurus mucrosquamatus) venom. It belongs to the snake venom heterodimeric C-type lectin family and exists in several multimeric forms. We now show that binding to platelet glycoprotein (GP) lb is involved in mucetin-induced platelet aggregation. Antibodies against GPIb as well as the GPIb-blocking C-type lectin echicetin inhibited mucetin-induced platelet aggregation. Binding of GPIb was confirmed by affinity chromatography and Western blotting. Antibodies against GPVI inhibited convulxin- but not mucetin-induced aggregation. Signalling by mucetin involved rapid tyrosine phosphorylation of a number of proteins including Syk, Src, LAT and PLCgamma2. Mucetininduced phosphorylation of the Fcgamma chain of platelet was greatly promoted by inhibition of alpha(llb)beta(3) by the peptidomimetic EMD 132338, suggesting that phosphatases downstream Of alpha(llb)beta(3) activation are involved in dephosphorylation of Fcgamma. Unlike other multimeric snake C-type lectins that act via GPIb and only agglutinate platelets, mucetin activates alpha(llb)beta(3). Inhibition Of alpha(llb)beta(3) strongly reduced the aggregation response to mucetin, indicating that activation Of alpha(llb)beta(3) and binding of fibrinogen are involved in mucetin-induced platelet aggregation. Apyrase and aspirin also inhibit platelet aggregation induced by mucetin, suggesting that ADP and thromboxaneA(2) are involved in autocrine feedback. Sequence and structural comparison with closely related members of this protein family point to features that may be responsible for the functional differences.

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A novel kinin-releasing and fibrin (ogen)olytic enzyme termed jerdonase was purified to homogeneity from the venom of Trimeresurus jerdonii by DEAE Sephadex A-50 anion exchange, Sephadex G-100 (superfine) gel filtration and reverse-phase high performance liquid chromatography (RP-HPLC). Jerdonase migrated as a single band with an approximate molecular weight of 55 kD under the reduced conditions and 53 kD under the non-reduced conditions. The enzyme was a glycoprotein containing 35.8% neutral carbohydrate. The N-terminal amino acid sequence of jerdonase was determined to be IIGGDECNINEHPFLVALYDA, which showed high sequence identity to other snake venom serine proteases. Jerdonase catalyzed the hydrolysis of BAEE, S-2238 and S-2302, which was inhibited by phenymethylsulfonyl fluoride (PMSF), but not affected by ethylenediaminetetraacetic acid (EDTA). Jerdonase preferentially cleaved the Aalpha-chain of human fibrinogen with lower activity towards Bbeta-chain. Moreover, the enzyme hydrolyzed bovine low-molecular-mass kininogen and releasing bradykinin. In conclusion, all results indicated that jerdonase was a multifunctional venom serine protease.

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Hourly productivity levels in the UK still remain behind those in some competitor countries. The government devotes much policy attention to enhancing productivity and continues to emphasise its five drivers - investment, innovation, skills, enterprise, and competition. This article argues that it is investment broadly defined that is the key to sustained productivity improvement. The emphasis should be on improving productivity simultaneously with improving the quality of production. Only thus will the gains be widely shared. In achieving these aims there are two prerequisites for policy-makers. The first is to ensure better coordination of policy than appears to be currently achieved by the present departmental structures in Whitehall. The second is to recognize fully the long and complex chain of causation that can be triggered by pulling on one policy lever. Such complexity can only be fully understood by more research on what actually goes on inside the black box of the organization. 2006 Oxford University Press.

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This paper introduces the problem of passive control of a chain of N identical masses in which there is an identical passive connection between neighbouring masses and a similar connection to a movable point. The problem arises in the design of multi-storey buildings which are subjected to earthquake disturbances, but applies in other situations, for example vehicle platoons. The paper will study the scalar transfer functions from the disturbance to a given intermass displacement. It will be shown that these transfer functions can be conveniently represented in the form of complex iterative maps and that these maps provide a method to establish boundedness in N of the H -norm of these transfer functions for certain choices of interconnection impedance. 2013 IEEE.

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The concept of traces has been introduced for describing non-sequential behaviour of concurrent systems via its sequential observations. Traces represent concurrent processes in the same way as strings represent sequential ones. The theory of traces can be used as a tool for reasoning about nets and it is hoped that applying this theory one can get a calculus of the concurrent processes anologous to that available for sequential systems. The following topics will be discussed: algebraic properties of traces, trace models of some concurrency phenomena, fixed-point calculus for finding the behaviour of nets, modularity, and some applications of the presented theory.

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HCCAFPAFP Beta-galactoside alpha-2,6-sialyltransferase (ST6Gal)ST6GalST6GalAFPAFP ST6Gal AFPTFThomsen-FriedenreichH2Lewis Y 1ST6Gal ST6Gal 2ELISAwestern blot3western blotST6Gal4AFP 1ST1:400000western blotST6Gal232ST6Gal221ST6Gal32ST6Gal3AFPTFH2Lewis YHepG2 ST6GalST6Galwestern blottingST6GalST6GalAFPTFH2LewisYAFP

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A novel sulfonated poly(arylene-co-imide)s were synthesized by Ni(0) catalytic copolymerization of sodium 3-(2,5-dichlorobenzoyl)benzenesulfonate and naphthalimide dichloride monomer. The synthesized copolymers with the - SO3H group on the side-chain of polymers possessed high molecular weights revealed by their high viscosity and the formation of tough and flexible membranes. Because of the introduction of electron donating phenoxy groups into naphthalimide moieties, the hydrolysis of the imide rings was depressed. The resulting copolymers exhibited excellent water stability. The copolymer membranes display no apparently change in appearance, flexibility, and toughness after a soaking treatment in pressurized water at 140 degrees C for 250 h.

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A novel series of white light emitting single polymers are prepared by incorporating low contents of quinacridone into the main chain of polyfluorene. This is the first report of quinacridone-containing conjugated polymer. Single layer devices (ITO/PEDOT:PSS/polymer/Ca/Al) are fabricated with these polymers. Energy transfer from fluorene segments to quinacridone unit is observed. Moreover, in the EL process, quinacridone unit can trap electrons and cannot trap holes from fluorene segments.

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We developed a series of highly efficient blue electroluminescent polymers with dopant-host systems and molecular dispersion features by selecting 1,8-naphthalimide derivatives as the light blue emissive dopant units, choosing polyfluorene as the deep blue emissive polymer host and covalently attaching the dopant units to the side chain of the polymer host. The polymers' EL spectra exhibited both deep blue emission from the polymer host and light blue emission from the dopant units because of the energy transfer and charge trapping from the polymer host to the dopant units.

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By selecting polyfluorene as the polymer host, choosing 2,1,3-benzothiadiazole derivative moieties as the red dopant units and covalently attaching 0.3 mol% of the dopant units to the side chain of the polymer host, we developed a novel series of red electroluminescent polymers of dopant/host system with molecular dispersion feature. Their EL spectra exhibited predominant red emission from the dopant units because of the energy transfer and charge trapping from the polymer backbone to the dopant units. The emission wavelength of the polymers could be tuned by modifying the chemical structures of the dopant units.

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A highly efficient white electroluminescent polymer with simultaneous blue, green, and red emission is reported, developed using a dopant/host strategy by covalently attaching both a green- and a red-light-emitting dopant to the side chain of a blue-light-emitting polymer host (see figure). In a single-layer device a maximum luminance efficiency of 7.3 cd A(-1) with CIE coordinates of (0.31,0.32) is achieved.