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Desenvolvimento de fotoanodos para células solares cossensibilizados com pigmento natural e ponto quântico
(Universidade do Estado do Amazonas, 2025-07-10) Soares, Katrin Ludwig; Raphael, Ellen; http://lattes.cnpq.br/1077764607984864; http://lattes.cnpq.br/1851933349252706; Pontes, Fagnaldo Braga; http://lattes.cnpq.br/1434408159354003; Amancio, Moisés do Amaral; http://lattes.cnpq.br/5478732277588937; Silva, Jefferson Luiz Grangeiro da; http://lattes.cnpq.br/4354833500264650
The demand for alternative energy sources is growing, and solar energy has been shown promising as a clean, sustainable and inexhaustible source. Photovoltaic cells directly convert solar energy into electrical energy through the photovoltaic effect, which occurs when a semiconductor material is exposed to light. The Shockley-Queisser photoconversion limit defines the maximum theoretical efficiency that these cells can achieve for a given light spectrum. Third generation solar cells appear as a possibility of exceeding this limit, being highlighted in research for improvement and cost reduction. This is the case, for example, of dye-sensitized solar cells and quantum dot-sensitized solar cells. Cosensitization is proposed, that is, a cell combining sensitization by natural pigment (from the genipap fruit, a fruit of Amazonian origin) with sensitization by quantum dot CdS. The dye extraction was carried out by choosing to use Milli-Q water as solvent for the dye to be used. Photoanodes were developed and cells were set up in different configurations for parameter comparison. The results obtained from UV-Vis analyzes and photoelectrochemical characterizations made it possible to ensure the potential of the photoanode cosensitized by natural pigment and quantum dot.
Análise do processo de produção e criação do espetáculo "em nome da familia".
(Universidade do Estado do Amazonas, 2024-11-29) Rodrigues, Samarone Kelwen de Souza.; Castro, Jhon Weiner de.; http://lattes.cnpq.br/8281050672522859; Castro, Jhon Weiner de.; http://lattes.cnpq.br/8281050672522859; Dias, Wellington Douglas dos Santos.; http://lattes.cnpq.br/3191786586059664; Amaral, Jorge Bandeira do.; http://lattes.cnpq.br/5381366080272629
This article analyzes the creative and production process of the theatrical play "Em Nome da Família", inspired by Eugene O'Neill's "Long Day's Journey Into Night". Originally conceived as an academic activity, the play evolved into an independent production with its own narrative, addressing themes such as alcoholism, sexism, and family conflicts. The research explores realist and naturalist theater, drawing on authors such as Stanislavski, Spolin, and Mantovani. It details the challenges faced during the directing process, cast changes, and technical limitations, as well as the use of scenic elements like costumes, sound design, and lighting, which enriched the theatrical experience. The final production reflects a synthesis of academic practices and the pursuit of accessible and reflective theater that connects with the audience through universal themes.
A figura da mulher no teatro: uma análise do teatro como empoderamento para mulheres que vivem em situação de vulnerabilidade social no espetáculo Marias.
(Universidade do Estado do Amazonas, 2024-12-03) Batista, Juliane Damascena.; Gonçalves, Luiz Davi Vieira.; http://lattes.cnpq.br/3790619092082749; Gonçalves, Luiz Davi Vieira.; http://lattes.cnpq.br/3790619092082749; Afonso, Annie Martins.; http://lattes.cnpq.br/9765347717584748; Dias, Wellington Douglas dos Santos.; http://lattes.cnpq.br/3191786586059664
Esta investigación está basada en los estudios del proyecto de finalización de la carrera de Teatro, por la Universidad del Estado de Amazonas - UEA. Así, este proyecto tiene como objetivo analizar la figura de la mujer en el teatro, como empoderamiento para las mujeres que viven en situación de vulnerabilidad social, en el espectáculo Marías. Se pretende analizar a la mujer en el teatro y a la mujer en situación de vulnerabilidad social, observando cómo el teatro puede ser empoderador para estas mujeres que son invisibilizadas a diario, proporcionándoles un espacio de libertad de expresión y reconocimiento. El artículo aborda temas sensibles y relatos reales de mujeres en situación de calle, que sufren opresiones y violencias constantemente debido a la falta de seguridad, protección y apoyo familiar. Por eso, el papel del teatro, ya que es un camino hacia nuevas experiencias. Con este propósito, se pretende acoger a estas mujeres y sus historias, para que sean escuchadas y manifestadas en escena.
Isolamento e caracterização das atividades anticoagulante e anti-inflamatória da crotoxina de crotalus durissus ruruima
(Universidade do Estado do Amazonas, 2025) Marques, Greene Dias; Koolen, Hector Henrique Ferreira; http://lattes.cnpq.br/2722430673503338; http://lattes.cnpq.br/3776766038379309; Sartim, Marco Aurélio; http://lattes.cnpq.br/0196692401515816; Silva, Gladys Corrêa da; http://lattes.cnpq.br/8851211859439121; Lima Júnior, Raimundo Sousa; http://lattes.cnpq.br/2055426262014670
Crotalus durissus ruruima (C.d.r) is a rattlesnake species found in the northern region of
Brazil, whose, among the various toxins present in its venom, crotoxin (CTX) is the most
abundant in its venom. Studies have shown that CTX exhibits diverse biological
activities, including anti-inflammatory and anticoagulant effects. However, CTX from
the Crotalus durissus ruruima subspecies has not yet been isolated or tested for its
potential biological properties. Therefore, the main objective of the present study was to
evaluate the anti-inflammatory and anticoagulant activities of CTX isolated from C. d.
ruruima in an in vitro model. CTX was purified from crude venom through a two-step
liquid chromatography process: size-exclusion chromatography (Superdex 75 GL)
followed by anion-exchange chromatography (Mono Q GL). Chromatographic
procedures were monitored by SDS-PAGE electrophoresis and phospholipase activity
assay. To assess the cytotoxic effect of CTX on peripheral blood mononuclear cells
(PBMCs), the MTT reduction assay was employed to determine cell viability. The antiinflammatory activity was evaluated by treating PBMCs with CTX followed by
stimulation with the pro-inflammatory agent lipopolysaccharide (LPS). After incubation,
culture supernatants were collected for quantification of cytokines IL-1β and TNF-α. For
anticoagulant activity assessment, platelet-poor plasma was incubated with different
concentrations of CTX (3.0; 1.5; 0.75; 0.375; and 0.1875 µg/mL) and tested using the
Prothrombin Time assay. Following purification steps, SDS-PAGE analysis revealed
bands at approximately 9 kDa and 15 kDa, corresponding to the two subunits of the toxin
(CA and CB), along with confirmed phospholipase activity. Cell viability assays
indicated that CTX at concentrations of 0.01 µg/mL and 0.05 µg/mL were non-cytotoxic,
with 0.01 µg/mL being the most suitable dose. Anti-inflammatory activity assessment
showed that both CTX concentrations reduced TNF-α production, while 0.01 µg/mL also
reduced IL-1β levels, making it the most effective dose. Regarding anticoagulant activity,
the 3 µg/mL dose significantly prolonged clotting time. In conclusion, CTX isolated from
C. d. ruruima demonstrated both anti-inflammatory and anticoagulant activities,
suggesting its potential as a therapeutic agent for inflammatory disorders.
Keywords: Crotoxin; Anti-inflammatory; Anticoagulant; Purification.
Produção de biossurfactantes por fungos endofíticos isolados de eichhornia crassipes da bacia do Tarumã-Açu, Manaus, AM
(Universidade do Estado do Amazonas, 2025) Santos, Yasmim Laranjeira; Ferreira, Francisca da Silva; http://lattes.cnpq.br/1723440880004223; http://lattes.cnpq.br/7741679878832946; Batista, Ieda Hortêncio; http://lattes.cnpq.br/5290529604475961; Lima, João Marcelo Silva; http://lattes.cnpq.br/5666694288994264; Oliveira Júnior, Sérgio Dantas de; http://lattes.cnpq.br/4641007172823726
Biosurfactants are amphipathic molecules with low toxicity and high biodegradability,
attracting commercial interest due to their environmental safety. Recent studies
confirm their production by endophytic fungi. In this context, the present study
investigated the production of biosurfactants by filamentous fungi isolated from the
aquatic macrophyte Eichhornia crassipes (Mart.) Solms, collected from the TarumãAçu river basin in Manaus, Brazil. After isolation and purification of the plant material,
27 fungal strains were obtained (23 filamentous and 4 yeast-like), with colonization
rates ranging from 13% (root) to 80% (bulb). The filamentous fungi were subjected to
biosurfactant production tests, including drop-collapse assay, emulsification index
(using soybean oil, diesel, and kerosene), and surface tension (ST) measurement
using the Du Noüy ring method. Five strains tested positive in the initial screenings,
with three showing moderate ST reduction (34.9%, 34.1%, and 32.2%). These
strains were morphologically characterized, but genus-level identification was not
possible; they were classified as Mycelia sterilia. The results highlight the
biotechnological potential of endophytic fungi associated with E. crassipes for
biosurfactant production.
Keywords: Emulsification; Endophytes; Fungi; Macrophyte; Surface tension.