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1.
Purification and characterization of fibrinolytic protease from Streptomyces parvulus by polyethylene glycol-phosphate aqueous two-phase system
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ALENCAR, VIVIANE N.S.
; NASCIMENTO, MARIA CLARA DO
; FERREIRA, JULYANNE V. DOS SANTOS
; BATISTA, JUANIZE M. DA SILVA
; CUNHA, MARCIA N.C. DA
; NASCIMENTO, JÉSSICA M. DO
; SOBRAL, RENATA V. DA SILVA
; COUTO, MILENA T.T. DO
; NASCIMENTO, THIAGO P.
; COSTA, ROMERO M.P.B.
; PORTO, ANA LÚCIA F.
; LEITE, ANA CRISTINA L.
.
Abstract Fibrinolytic proteases are a promising alternative in the pharmaceutical industry, they are used in the treatment of cardiovascular diseases, especially thrombosis. Microorganisms are the most interesting source of fibrinolytic proteases. The aim of this study was the production of fibrinolytic protease from Streptomyces parvulus DPUA 1573, the recovery of the protease by aqueous two-phase system and partial biochemical characterization of the enzyme. The aqueous two-phase system was performed according to a 24-full factorial design using polyethylene glycol molar mass, polyethylene glycol concentration, citrate concentration and pH as independent variables. It was analyzed the effect of different ions, surfactants, inhibitors, pH and temperature on enzyme activity. The best conditions for purifying the enzyme were 17.5% polyethylene glycol 8,000, 15% Phosphate and pH 8.0, it was obtained a partition coefficient of 7.33, a yield of 57.49% and a purification factor of 2.10-fold. There was an increase in enzyme activity in the presence of Fe2+ and a decrease in the presence of $\beta$-Mercaptoethanol, phenylmethylsulfonyl fluoride and Iodoacetic acid. The optimum pH was 7.0 and the optimum temperature was 40 ºC. The purified protease exhibited a molecular mass of 41 kDa. The fibrinolytic protease from Streptomyces parvulus proved to be a viable option for the development of a possible drug with fibrinolytic action.
https://doi.org/10.1590/0001-3765202120210335
1 downloads
2.
Growth performance, carcass traits and meat quality of lambs fed increasing level of Macadamia nut cake
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MARCONATO, MICHAEL N.S.
; SANCHES, TAMIRES P.
; CHAVES, CAMILA M.S.
; BUENO, MAURO S.
; ISSAKOWICZ, JULIANO
; HAGUIWARA, MARCIA M.H.
; PAZ, CLÁUDIA CRISTINA P. DE
; REIS, LETÍCIA L. DOS
; ABDALLA, ADIBE LUIS
; COSTA, RICARDO L.D. DA
.
Abstract A total of 40 lambs were divided into four different treatments according to the inclusion level of the macadamia nut cake: C-control (0%), M1 (6.5%), M2 (12%) and M3 (20%). Feed was provided twice a day; animal weighing along with body condition scoring occurred within a 14-day interval. The lambs were slaughtered at the end of the performance test. Analysis of variance was performed through the Mixed procedure of the SAS, as well as linear and quadratic regression analysis. The groups presented differences between the treatments (P <0.05) for dry matter intake (DMI), ethereal extract intake (EEI), consumption in relation to live weight percentage and feed conversion ratio (FCR). The lowest mean DMI was obtained by the animals that received the M2 and differed from the C treatment, whose average was the highest. The EEI was highest for the M3 group and the FCR was also better for this group. There was a linear effect for EEI and FCR, and quadratic for crude protein intake. There was no effect for carcass characteristics, and only initial pH had a decreasing linear effect. The macadamia nut cake was effective in promoting the performance of the animals, since there was an improvement in feed conversion.
https://doi.org/10.1590/0001-3765202120190852
233 downloads
3.
Anatomical modifications of Butia capitata propagated under colored shade nets
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COSTA, BÁRBARA N.S.
; COSTA, IRTON J.S.
; SOUZA, GENAINA A. DE
; SANTOS, DALILHIA N. DOS
; SILVEIRA, FLÁVIA A. DA
; MELO, EVALDO T. DE
; MARTINS, ADALVAN D.
; PASQUAL, MOACIR
; SETOTAW, TESFAHUN A.
; RODRIGUES, FILIPE A.
.
Abstract The jelly palm plant [Butia capitata (Martius) Beccari] is a native palm of the Cerrado biome used for many purposes in northern Minas Gerais State, Brazil. Dormancy is common in palm seeds, resulting in slow and uneven germination that may take years to complete. Modification in the growth pattern, anatomical parameters, physiological and biochemical characteristics of the plant can be verified due to changes in the light spectrum transmitted through colored shade nets used. Therefore, the objective of this study is to evaluate the effect of colored shade nets on the leaf and root anatomy of the jelly palm plant. The experiment was performed in a completely randomized design, with five treatments, ten replicates and eight plants per replicate, totaling 400 plants. Four colored photo-converter nets with 50% shading and different radiation proportions were employed: white (985 μmol.m-2.s-1), red (327 μmol.m-2.s-1), black (433 μmol.m-2.s-1) and silver (405 μmol.m-2.s-1). The plants cultivated under direct sunlight (1000 μmol.m-2.s-1) were considered as the control group. Leaf and root anatomical analysis was performed on 10 plants per treatment. It is possible to conclude that the colored shade nets caused changes in leaf and root anatomy of the jelly palm plant (Butia capitata).
https://doi.org/10.1590/0001-3765201820170347
979 downloads
4.
Environmental changes during the last millennium based on multi-proxy palaeoecological records in a savanna-forest mosaic from the northernmost Brazilian Amazon region
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RESUMOAs mudanças ambientais e a dinâmica do mosaico savana-floresta durante os últimos 1050 anos foram reconstituídos através de análises palinológicas, de partículas carbonizadas, datação radiocarbônica, mineralógicas e geoquímicas de testemunhos de sedimentos amostrados a partir de três diferentes veredas de Mauritia flexuosa, na porção mais setentrional da região amazônica brasileira (norte do estado de Roraima). Estudos da relação entre a chuva polínica atual e a vegetação regional fornecem informações complementares para a interpretação dos registros polínicos fósseis. Os resultados das análises das assembleias de pólen fóssil e geoquímicas indicam condições climáticas relativamente úmidas ao longo do período registrado. Apesar destas condições de umidade, a atuação de fogos foi frequente e é uma das razões apontadas para a dominância de savana ao invés de floresta na região de estudo. Considerando que as condições climáticas foram geralmente úmidas, infere-se que estes fogos provavelmente foram causados pelas atividades antrópicas. Mesmo atualmente, os fogos impedem a expansão da floresta sobre as áreas de savana. Além disso, os solos arenosos e hidromórficos também podem atuar como um controle edáfico para manter delineado o limite atual entre os ecossistemas de floresta e savana.
ABSTRACTThe environmental changes and the dynamics of the savanna-forest mosaic, over the last 1050 years, have been reconstructed by pollen, charcoal, radiocarbon dating mineralogical and geochemical analyses of sediment cores taken from three different Mauritia flexuosapalm swamps in the northernmost part of the Brazilian Amazon region (northern state of Roraima). Studies on the relationship between the modern pollen rain and the regional vegetation provide additional information for the interpretation of the fossil pollen records. The fossil pollen assemblages and geochemical results indicate relatively wet climatic conditions throughout the recorded period. Despite these moist conditions, fires were frequent and are one of the reasons for the dominance of a grassy savanna instead of forest expansion in the study area. Considering the generally wet climatic conditions, these fires were most likely caused by human activities. Even today, fires hinder forest expansion into savanna areas. Sandy hydromorphic soils may also act as an edaphic control to maintain the current sharp boundary between forest and savanna ecosystems.
https://doi.org/10.1590/0001-3765201520130074
2470 downloads
5.
Interspecific transmission of small ruminant lentiviruses from goats to sheep
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Souza, Thiago S. de
; Pinheiro, Raymundo R.
; Costa, Joselito N.
; Lima, Carla C.V. de
; Andrioli, Alice
; Azevedo, Dalva A.A. de
; Santos, Vanderlan W.S. dos
; Araújo, Juscilânia F.
; Sousa, Ana Lídia M. de
; Pinheiro, Danielle N.S.
; Fernandes, Flora M.C.
; Costa Neto, Antonio O.
.
This study was conducted in order to evaluate the transmission of caprine lentivirus to sheep using different experimental groups. The first one (colostrum group) was formed by nine lambs receiving colostrum from goats positive for small ruminant lentiviruses (SRLV). The second group (milk group) was established by nine lambs that received milk of these goats. Third was a control group, consisting of lambs that suckled colostrum and milk of negative mothers. Another experimental group (contact group) was formed by eight adult sheep, confined with two naturally infected goats. The groups were monitored by immunoblotting (IB), enzyme-linked immunosorbent assay (ELISA), agar gel immunodiffusion (AGID) and nested polymerase chain reaction (nPCR). All lambs that suckled colostrum and milk of infected goats and six sheep of the contact group had positive results in the nPCR, although seroconversion was detected only in three of the exposed animals, with no clinical lentiviruses manifestation, in 720 days of observation. There was a close relationship between viral sequences obtained from infected animals and the prototype CAEV-Cork. Thus, it was concluded that SRLV can be transmitted from goats to sheep, however, the degree of adaptation of the virus strain to the host species probably interferes with the infection persistence and seroconversion rate.
https://doi.org/10.1590/S1517-838246320140402
2155 downloads
6.
Toxicidade aguda ao sal comum e larvicultura intensiva do jundiá Rhamdia quelen em água salobra
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Fabregat, T.E.H.P.
; Damian, J.
; Fialho, N.S.
; Costa, D.
; Broggi, J.A.
; Pereira, R.G.
; Takata, R.
.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia
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A tolerância de peixes de água doce à salinidade e os níveis adequados de náuplios de Artemia na alimentação durante a larvicultura são de extrema importância para a padronização dos manejos em ambientes de criação intensiva. Dessa forma, o objetivo do trabalho foi estimar a salinidade letal (SL50) para larvas de jundiá Rhamdia quelen e determinar o efeito da salinidade e da concentração de presas vivas na larvicultura intensiva. No primeiro ensaio, larvas ao final do período lecitotrófico (1,1±0,8mg) foram submetidas às salinidades de 0, 2, 4, 6, 8, 10, 15 e 20g de sal/L por um período de 96h. No segundo experimento, as larvas de jundiá, no início da alimentação exógena (1,2±0,3mg), foram submetidas a três salinidades (água doce 0, 2 e 4g de sal/L) e três concentrações de presas vivas (início: 300, 500, 700 náuplios de Artemia/larvas/dia, sendo esse montante aumentado a cada cinco dias). O experimento foi realizado em delineamento inteiramente ao acaso, em esquema fatorial 3x3, por um período de 15 dias. No experimento 1, as larvas de jundiá submetidas às salinidades de 10, 15 e 20g de sal/L morreram após 12, duas e uma hora de exposição, respectivamente. As SL50 de 72 e 96h foram estimadas em 9,93 e 4,95g de sal/L, respectivamente. No final do teste de toxicidade, não houve diferença na sobrevivência entre as salinidades de 0, 2 e 4g de sal/L. No experimento 2, não foi observado efeito da interação entre salinidade e concentração de presas para o peso e o comprimento. Quanto maior a quantidade de presas, maior o crescimento das larvas. A sobrevivência apresentou interação entre os fatores. O aumento da salinidade proporcionou uma diminuição da sobrevivência, independentemente da concentração de presas. Dessa forma, conclui-se que a SL50 diminuiu com o aumento do tempo de exposição à água salinizada e que a larvicultura da espécie pode ser realizada em salinidades de até 2g de sal/L, com concentração de presas vivas diária inicial de 700 náuplios de Artemia/larva.
The tolerance of freshwater fish to salinity and the adequate levels of Artemia nauplii in the feeding regime during larviculture are of extreme importance to the standardization of management practices in intensive production environments. Therefore, the aim of this study was to estimate the lethal salinity (LS50) of the silver catfish Rhamdia quelen larvae and determine the effect of salinity and the concentrations of live prey in intensive larviculture of this species. In the first trial, larvae at the end of the lecithotrophic period (1.1±0.8mg) were subjected to salinities of 0, 2, 4, 6, 8, 10, 15 and 20g of salt/L for a period of 96h. In the second experiment, the catfish larvae starting the exogenous feed (1.2±0.3mg) were subjected to three salinities (freshwater 0, 2 and 4g of salt/L) and three concentrations of live prey (starting at: 300, 500, 700 Artemia nauplii/larvae/day, this amount being increased every five days). The experiment was conducted in a completely randomized design in a 3x3 factorial scheme, for a period of 15 days. In experiment 1, the catfish larvae subjected to the salinities of 10, 15 and 20g of salt/L died after 12, 2 and 1h of exposure, respectively. The LS50 at 72 and 96 h were estimated at 9.93 and 4.95g of salt/L, respectively. At the end of the toxicity test, there was no difference in the survival among the salinities of 0, 2 and 4g of salt/L. In experiment 2 no significant interaction was observed between salinity and the concentration of prey for weight and length. The increased quantity of prey increased the growth of the larvae. The rise in the salinity correlated to a decrease in survival, regardless of the prey concentration. Thus, it is concluded that the LS50 decreased with the increase in time of exposure to saltwater, and that the larviculture of this specie can be conducted in salinities of up to 2g salt/L, with a daily prey concentration starting at 700 Artemia/larvae.
https://doi.org/10.1590/1678-7660
1994 downloads
7.
Avaliação das atividades cicatrizante, anti-inflamatória tópica e antioxidante do extrato etanólico da Sideroxylon obtusifolium (quixabeira)
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LEITE, N.S.
; LIMA, A.P.
; ARAÚJO-NETO, V.
; ESTEVAM, C.S.
; PANTALEÃO, S.M.
; CAMARGO, E.A.
; FERNANDES, R.P.M.
; COSTA, S.K.P.
; MUSCARÁ, M.N.
; THOMAZZI, S.M.
.
A planta Sideroxylon obtusifolium, conhecida popularmente como "quixabeira", é utilizada na medicina popular para o tratamento de processos inflamatórios e dolorosos. O objetivo deste trabalho foi avaliar a possível ação cicatrizante, bem como anti-inflamatória tópica, do extrato etanólico (EE) da entrecasca da S. obtusifolium no modelo de ferida e cicatrização cutânea. Para isso, ratos Wistar foram anestesiados, submetidos à incisão dorsal, e discos de esponja de álcool polivinílico foram inseridos subcutâneamente. Quarenta e oito horas após os animais foram eutanasiados avaliando-se medidas de tensão de ruptura nas cicatrizes da pele dorsal, a atividade de mieloperoxidase (MPO), e a contagem de células nos exsudatos das esponjas. A atividade sequestradora do radical 2,2-difenil-1-picrilhidrazil (DPPH) foi determinada para avaliar a capacidade antioxidante do EE. Observamos que a administração tópica, 2 vezes ao dia, do EE da S. obtusifolium (3-30 mg 0,4 mL-1 de creme Lanette(r)) não alterou a tensão de ruptura das cicatrizes. Entretanto, o EE da S. obtusifolium (30 mg 0,4 mL-1 de creme Lanette(r)) foi capaz de diminuir a atividade de MPO (p<0,01) e a contagem celular (p<0,05) no exsudato das esponjas, após 48 h da indução da ferida. O EE mostrou-se ativo como sequestrador do radical DPPH. Os valores de IC50 para o EE e ácido gálico foram semelhantes (1,04 ± 0,27 e 1,15 ± 0,02 μg mL-1 de DPPH, respectivamente). Concluímos que o EE da entrecasca da S. obtusifolium possui atividade anti-inflamatória através da administração tópica no modelo de cicatrização cutânea em ratos, além de seu potencial antioxidante.
The Sideroxylon obtusifolium is a medicinal plant known as “quixabeira” in Portuguese that has been used in folk medicine for the treatment of inflammatory and painful processes. The aim of this study was to evaluate the effect of the ethanol extract (EE) of S. obtusifolium on the cicatrization and local anti-inflammatory activities using a model of wound healing in rats. Wistar rats were submitted to a dorsal skin incision and polyvinyl alcohol sponge discs were implanted. Animals were euthanized after 48 h, and the tensile strength measurement at the wound site, the myeloperoxidase (MPO) activity and the leukocyte counts in the wound exudates were evaluated. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was determined to evaluate the antioxidant capacity of the EE. We observed that the topical administration of the EE of S. obtusifolium (3-30 mg 0.4 mL-1 of Lanette® cream) twice a day did not alter the tensile strength, but it decreased the MPO activity (p<0,01)and leukocyte infiltration (p<0,05) after 48 h of induction of wound. The EE shows to be active as DPPH radical scavenger. The IC50 value for the EE was similar to the IC50 value of gallic acid (1.04 ± 0.27 and 1.15 ± 0.02 μg mL-1 DPPH, respectively). In conclusion, the EE of Sideroxylon obtusifolium shows local anti-inflammatory activity in the model of wound healing in rats, in addition to antioxidant potential.
https://doi.org/10.1590/1983-084X/09_189
5816 downloads
8.
Growing knowledge: an overview of Seed Plant diversity in Brazil
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Zappi, Daniela C.
; Filardi, Fabiana L. Ranzato
; Leitman, Paula
; Souza, Vinícius C.
; Walter, Bruno M.T.
; Pirani, José R.
; Morim, Marli P.
; Queiroz, Luciano P.
; Cavalcanti, Taciana B.
; Mansano, Vidal F.
; Forzza, Rafaela C.
; Abreu, Maria C.
; Acevedo-Rodríguez, Pedro
; Agra, Maria F.
; Almeida Jr., Eduardo B.
; Almeida, Gracineide S.S.
; Almeida, Rafael F.
; Alves, Flávio M.
; Alves, Marccus
; Alves-Araujo, Anderson
; Amaral, Maria C.E.
; Amorim, André M.
; Amorim, Bruno
; Andrade, Ivanilza M.
; Andreata, Regina H.P.
; Andrino, Caroline O.
; Anunciação, Elisete A.
; Aona, Lidyanne Y.S.
; Aranguren, Yani
; Aranha Filho, João L.M.
; Araújo, Andrea O.
; Araújo, Ariclenes A.M.
; Araújo, Diogo
; Arbo, María M.
; Assis, Leandro
; Assis, Marta C.
; Assunção, Vivian A.
; Athiê-Souza, Sarah M.
; Azevedo, Cecilia O.
; Baitello, João B.
; Barberena, Felipe F.V.A.
; Barbosa, Maria R.V.
; Barros, Fábio
; Barros, Lucas A.V.
; Barros, Michel J.F.
; Baumgratz, José F.A.
; Bernacci, Luis C.
; Berry, Paul E.
; Bigio, Narcísio C.
; Biral, Leonardo
; Bittrich, Volker
; Borges, Rafael A.X.
; Bortoluzzi, Roseli L.C.
; Bove, Cláudia P.
; Bovini, Massimo G.
; Braga, João M.A.
; Braz, Denise M.
; Bringel Jr., João B.A.
; Bruniera, Carla P.
; Buturi, Camila V.
; Cabral, Elza
; Cabral, Fernanda N.
; Caddah, Mayara K.
; Caires, Claudenir S.
; Calazans, Luana S.B.
; Calió, Maria F.
; Camargo, Rodrigo A.
; Campbell, Lisa
; Canto-Dorow, Thais S.
; Carauta, Jorge P.P.
; Cardiel, José M.
; Cardoso, Domingos B.O.S.
; Cardoso, Leandro J.T.
; Carneiro, Camila R.
; Carneiro, Cláudia E.
; Carneiro-Torres, Daniela S.
; Carrijo, Tatiana T.
; Caruzo, Maria B.R.
; Carvalho, Maria L.S.
; Carvalho-Silva, Micheline
; Castello, Ana C.D.
; Cavalheiro, Larissa
; Cervi, Armando C.
; Chacon, Roberta G.
; Chautems, Alain
; Chiavegatto, Berenice
; Chukr, Nádia S.
; Coelho, Alexa A.O.P.
; Coelho, Marcus A.N.
; Coelho, Rubens L.G.
; Cordeiro, Inês
; Cordula, Elizabeth
; Cornejo, Xavier
; Côrtes, Ana L.A.
; Costa, Andrea F.
; Costa, Fabiane N.
; Costa, Jorge A.S.
; Costa, Leila C.
; Costa-e-Silva, Maria B.
; Costa-Lima, James L.
; Cota, Maria R.C.
; Couto, Ricardo S.
; Daly, Douglas C.
; De Stefano, Rodrigo D.
; De Toni, Karen
; Dematteis, Massimiliano
; Dettke, Greta A.
; Di Maio, Fernando R.
; Dórea, Marcos C.
; Duarte, Marília C.
; Dutilh, Julie H.A.
; Dutra, Valquíria F.
; Echternacht, Lívia
; Eggers, Lilian
; Esteves, Gerleni
; Ezcurra, Cecilia
; Falcão Junior, Marcus J.A.
; Feres, Fabíola
; Fernandes, José M.
; Ferreira, D.M.C.
; Ferreira, Fabrício M.
; Ferreira, Gabriel E.
; Ferreira, Priscila P.A.
; Ferreira, Silvana C.
; Ferrucci, Maria S.
; Fiaschi, Pedro
; Filgueiras, Tarciso S.
; Firens, Marcela
; Flores, Andreia S.
; Forero, Enrique
; Forster, Wellington
; Fortuna-Perez, Ana P.
; Fortunato, Reneé H.
; Fraga, Cléudio N.
; França, Flávio
; Francener, Augusto
; Freitas, Joelcio
; Freitas, Maria F.
; Fritsch, Peter W.
; Furtado, Samyra G.
; Gaglioti, André L.
; Garcia, Flávia C.P.
; Germano Filho, Pedro
; Giacomin, Leandro
; Gil, André S.B.
; Giulietti, Ana M.
; A.P.Godoy, Silvana
; Goldenberg, Renato
; Gomes da Costa, Géssica A.
; Gomes, Mário
; Gomes-Klein, Vera L.
; Gonçalves, Eduardo Gomes
; Graham, Shirley
; Groppo, Milton
; Guedes, Juliana S.
; Guimarães, Leonardo R.S.
; Guimarães, Paulo J.F.
; Guimarães, Elsie F.
; Gutierrez, Raul
; Harley, Raymond
; Hassemer, Gustavo
; Hattori, Eric K.O.
; Hefler, Sonia M.
; Heiden, Gustavo
; Henderson, Andrew
; Hensold, Nancy
; Hiepko, Paul
; Holanda, Ana S.S.
; Iganci, João R.V.
; Imig, Daniela C.
; Indriunas, Alexandre
; Jacques, Eliane L.
; Jardim, Jomar G.
; Kamer, Hiltje M.
; Kameyama, Cíntia
; Kinoshita, Luiza S.
; Kirizawa, Mizué
; Klitgaard, Bente B.
; Koch, Ingrid
; Koschnitzke, Cristiana
; Krauss, Nathália P.
; Kriebel, Ricardo
; Kuntz, Juliana
; Larocca, João
; Leal, Eduardo S.
; Lewis, Gwilym P.
; Lima, Carla T.
; Lima, Haroldo C.
; Lima, Itamar B.
; Lima, Laíce F.G.
; Lima, Laura C.P.
; Lima, Leticia R.
; Lima, Luís F.P.
; Lima, Rita B.
; Lírio, Elton J.
; Liro, Renata M.
; Lleras, Eduardo
; Lobão, Adriana
; Loeuille, Benoit
; Lohmann, Lúcia G.
; Loiola, Maria I.B.
; Lombardi, Julio A.
; Longhi-Wagner, Hilda M.
; Lopes, Rosana C.
; Lorencini, Tiago S.
; Louzada, Rafael B.
; Lovo, Juliana
; Lozano, Eduardo D.
; Lucas, Eve
; Ludtke, Raquel
; Luz, Christian L.
; Maas, Paul
; Machado, Anderson F.P.
; Macias, Leila
; Maciel, Jefferson R.
; Magenta, Mara A.G.
; Mamede, Maria C.H.
; Manoel, Evelin A.
; Marchioretto, Maria S.
; Marques, Juliana S.
; Marquete, Nilda
; Marquete, Ronaldo
; Martinelli, Gustavo
; Martins da Silva, Regina C.V.
; Martins, Ângela B.
; Martins, Erika R.
; Martins, Márcio L.L.
; Martins, Milena V.
; Martins, Renata C.
; Matias, Ligia Q.
; Maya-L., Carlos A.
; Mayo, Simon
; Mazine, Fiorella
; Medeiros, Debora
; Medeiros, Erika S.
; Medeiros, Herison
; Medeiros, João D.
; Meireles, José E.
; Mello-Silva, Renato
; Melo, Aline
; Melo, André L.
; Melo, Efigênia
; Melo, José I.M.
; Menezes, Cristine G.
; Menini Neto, Luiz
; Mentz, Lilian A.
; Mezzonato, A.C.
; Michelangeli, Fabián A.
; Milward-de-Azevedo, Michaele A.
; Miotto, Silvia T.S.
; Miranda, Vitor F.O.
; Mondin, Cláudio A.
; Monge, Marcelo
; Monteiro, Daniele
; Monteiro, Raquel F.
; Moraes, Marta D.
; Moraes, Pedro L.R.
; Mori, Scott A.
; Mota, Aline C.
; Mota, Nara F.O.
; Moura, Tania M.
; Mulgura, Maria
; Nakajima, Jimi N.
; Nardy, Camila
; Nascimento Júnior, José E.
; Noblick, Larry
; Nunes, Teonildes S.
; O'Leary, Nataly
; Oliveira, Arline S.
; Oliveira, Caetano T.
; Oliveira, Juliana A.
; Oliveira, Luciana S.D.
; Oliveira, Maria L.A.A.
; Oliveira, Regina C.
; Oliveira, Renata S.
; Oliveira, Reyjane P.
; Paixão-Souza, Bruno
; Parra, Lara R.
; Pasini, Eduardo
; Pastore, José F.B.
; Pastore, Mayara
; Paula-Souza, Juliana
; Pederneiras, Leandro C.
; Peixoto, Ariane L.
; Pelissari, Gisela
; Pellegrini, Marco O.O.
; Pennington, Toby
; Perdiz, Ricardo O.
; Pereira, Anna C.M.
; Pereira, Maria S.
; Pereira, Rodrigo A.S.
; Pessoa, Clenia
; Pessoa, Edlley M.
; Pessoa, Maria C.R.
; Pinto, Luiz J.S.
; Pinto, Rafael B.
; Pontes, Tiago A.
; Prance, Ghillean T.
; Proença, Carolyn
; Profice, Sheila R.
; Pscheidt, Allan C.
; Queiroz, George A.
; Queiroz, Rubens T.
; Quinet, Alexandre
; Rainer, Heimo
; Ramos, Eliana
; Rando, Juliana G.
; Rapini, Alessandro
; Reginato, Marcelo
; Reis, Ilka P.
; Reis, Priscila A.
; Ribeiro, André R.O.
; Ribeiro, José E.L.S.
; Riina, Ricarda
; Ritter, Mara R.
; Rivadavia, Fernando
; Rocha, Antônio E.S.
; Rocha, Maria J.R.
; Rodrigues, Izabella M.C.
; Rodrigues, Karina F.
; Rodrigues, Rodrigo S.
; Rodrigues, Rodrigo S.
; Rodrigues, Vinícius T.
; Rodrigues, William
; Romaniuc Neto, Sérgio
; Romão, Gerson O.
; Romero, Rosana
; Roque, Nádia
; Rosa, Patrícia
; Rossi, Lúcia
; Sá, Cyl F.C.
; Saavedra, Mariana M.
; Saka, Mariana
; Sakuragui, Cássia M.
; Salas, Roberto M.
; Sales, Margareth F.
; Salimena, Fatima R.G.
; Sampaio, Daniela
; Sancho, Gisela
; Sano, Paulo T.
; Santos, Alessandra
; Santos, Élide P.
; Santos, Juliana S.
; Santos, Marianna R.
; Santos-Gonçalves, Ana P.
; Santos-Silva, Fernanda
; São-Mateus, Wallace
; Saraiva, Deisy P.
; Saridakis, Dennis P.
; Sartori, Ângela L.B.
; Scalon, Viviane R.
; Schneider, Ângelo
; Sebastiani, Renata
; Secco, Ricardo S.
; Senna, Luisa
; Senna-Valle, Luci
; Shirasuna, Regina T.
; Silva Filho, Pedro J.S.
; Silva, Anádria S.
; Silva, Christian
; Silva, Genilson A.R.
; Silva, Gisele O.
; Silva, Márcia C.R.
; Silva, Marcos J.
; Silva, Marcos J.
; Silva, Otávio L.M.
; Silva, Rafaela A.P.
; Silva, Saura R.
; Silva, Tania R.S.
; Silva-Gonçalves, Kelly C.
; Silva-Luz, Cíntia L.
; Simão-Bianchini, Rosângela
; Simões, André O.
; Simpson, Beryl
; Siniscalchi, Carolina M.
; Siqueira Filho, José A.
; Siqueira, Carlos E.
; Siqueira, Josafá C.
; Smith, Nathan P.
; Snak, Cristiane
; Soares Neto, Raimundo L.
; Soares, Kelen P.
; Soares, Marcos V.B.
; Soares, Maria L.
; Soares, Polyana N.
; Sobral, Marcos
; Sodré, Rodolfo C.
; Somner, Genise V.
; Sothers, Cynthia A.
; Sousa, Danilo J.L.
; Souza, Elnatan B.
; Souza, Élvia R.
; Souza, Marcelo
; Souza, Maria L.D.R.
; Souza-Buturi, Fátima O.
; Spina, Andréa P.
; Stapf, María N.S.
; Stefano, Marina V.
; Stehmann, João R.
; Steinmann, Victor
; Takeuchi, Cátia
; Taylor, Charlotte M.
; Taylor, Nigel P.
; Teles, Aristônio M.
; Temponi, Lívia G.
; Terra-Araujo, Mário H.
; Thode, Veronica
; Thomas, W.Wayt
; Tissot-Squalli, Mara L.
; Torke, Benjamin M.
; Torres, Roseli B.
; Tozzi, Ana M.G.A.
; Trad, Rafaela J.
; Trevisan, Rafael
; Trovó, Marcelo
; Valls, José F.M.
; Vaz, Angela M.S.F.
; Versieux, Leonardo
; Viana, Pedro L.
; Vianna Filho, Marcelo D.M.
; Vieira, Ana O.S.
; Vieira, Diego D.
; Vignoli-Silva, Márcia
; Vilar, Thaisa
; Vinhos, Franklin
; Wallnöfer, Bruno
; Wanderley, Maria G.L.
; Wasshausen, Dieter
; Watanabe, Maurício T.C.
; Weigend, Maximilian
; Welker, Cassiano A.D.
; Woodgyer, Elizabeth
; Xifreda, Cecilia C.
; Yamamoto, Kikyo
; Zanin, Ana
; Zenni, Rafael D.
; Zickel, Carmem S
.
Resumo Um levantamento atualizado das plantas com sementes e análises relevantes acerca desta biodiversidade são apresentados. Este trabalho se iniciou em 2010 com a publicação do Catálogo de Plantas e Fungos e, desde então vem sendo atualizado por mais de 430 especialistas trabalhando online. O Brasil abriga atualmente 32.086 espécies nativas de Angiospermas e 23 espécies nativas de Gimnospermas e estes novos dados mostram um aumento de 3% da riqueza em relação a 2010. A Amazônia é o Domínio Fitogeográfico com o maior número de espécies de Gimnospermas, enquanto que a Floresta Atlântica possui a maior riqueza de Angiospermas. Houve um crescimento considerável no número de espécies e nas taxas de endemismo para a maioria dos Domínios (Caatinga, Cerrado, Floresta Atlântica, Pampa e Pantanal), com exceção da Amazônia que apresentou uma diminuição de 2,5% de endemicidade. Entretanto, a maior parte das plantas com sementes que ocorrem no Brasil (57,4%) é endêmica deste território. A proporção de formas de vida varia de acordo com os diferentes Domínios: árvores são mais expressivas na Amazônia e Floresta Atlântica do que nos outros biomas, ervas são dominantes no Pampa e as lianas apresentam riqueza expressiva na Amazônia, Floresta Atlântica e Pantanal. Este trabalho não só quantifica a biodiversidade brasileira, mas também indica as lacunas de conhecimento e o desafio a ser enfrentado para a conservação desta flora.
Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora.
https://doi.org/10.1590/2175-7860201566411
33340 downloads
9.
Behavioral effects of endogenous or exogenous estradiol and progesterone on cocaine sensitization in female rats
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Souza, M.F.
; Couto-Pereira, N.S.
; Freese, L.
; Costa, P.A.
; Caletti, G.
; Bisognin, K.M.
; Nin, M.S.
; Gomez, R.
; Barros, H.M.T.
.
Brazilian Journal of Medical and Biological Research
- Journal Metrics
Cocaine sensitization is a marker for some facets of addiction, is greater in female rats, and may be influenced by their sex hormones. We compared the modulatory effects of endogenous or exogenous estradiol and progesterone on cocaine-induced behavioral sensitization in 106 female rats. Ovariectomized female rats received progesterone (0.5 mg/mL), estradiol (0.05 mg/mL), progesterone plus estradiol, or the oil vehicle. Sham-operated control females received oil. Control and acute subgroups received injections of saline, while the repeated group received cocaine (15 mg/kg, ip) for 8 days. After 10 days, the acute and repeated groups received a challenge dose of cocaine, after which locomotion and stereotypy were monitored. The estrous cycle phase was evaluated and blood was collected to verify hormone levels. Repeated cocaine treatment induced overall behavioral sensitization in female rats, with increased locomotion and stereotypies. In detailed analysis, ovariectomized rats showed no locomotor sensitization; however, the sensitization of stereotypies was maintained. Only females with endogenous estradiol and progesterone demonstrated increased locomotor activity after cocaine challenge. Estradiol replacement enhanced stereotyped behaviors after repeated cocaine administration. Cocaine sensitization of stereotyped behaviors in female rats was reduced after progesterone replacement, either alone or concomitant with estradiol. The behavioral responses (locomotion and stereotypy) to cocaine were affected differently, depending on whether the female hormones were of an endogenous or exogenous origin. Therefore, hormonal cycling appears to be an important factor in the sensitization of females. Although estradiol increases the risk of cocaine sensitization, progesterone warrants further study as a pharmacological treatment in the prevention of psychostimulant abuse.
https://doi.org/10.1590/1414-431X20143627
2951 downloads
10.
The hydrogen sulfide donor, Lawesson's reagent, prevents alendronate-induced gastric damage in rats
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Nicolau, L.A.D.
; Silva, R.O.
; Damasceno, S.R.B.
; Carvalho, N.S.
; Costa, N.R.D.
; Aragão, K.S.
; Barbosa, A.L.R.
; Soares, P.M.G.
; Souza, M.H.L.P.
; Medeiros, J.V.R.
.
Brazilian Journal of Medical and Biological Research
- Journal Metrics
Our objective was to investigate the protective effect of Lawesson's reagent, an H2S donor, against alendronate (ALD)-induced gastric damage in rats. Rats were pretreated with saline or Lawesson's reagent (3, 9, or 27 µmol/kg, po) once daily for 4 days. After 30 min, gastric damage was induced by ALD (30 mg/kg) administration by gavage. On the last day of treatment, the animals were killed 4 h after ALD administration. Gastric lesions were measured using a computer planimetry program, and gastric corpus pieces were assayed for malondialdehyde (MDA), glutathione (GSH), proinflammatory cytokines [tumor necrosis factor (TNF)-α and interleukin (IL)-1β], and myeloperoxidase (MPO). Other groups were pretreated with glibenclamide (5 mg/kg, ip) or with glibenclamide (5 mg/kg, ip)+diazoxide (3 mg/kg,ip). After 1 h, 27 µmol/kg Lawesson's reagent was administered. After 30 min, 30 mg/kg ALD was administered. ALD caused gastric damage (63.35±9.8 mm2); increased levels of TNF-α, IL-1β, and MDA (2311±302.3 pg/mL, 901.9±106.2 pg/mL, 121.1±4.3 nmol/g, respectively); increased MPO activity (26.1±3.8 U/mg); and reduced GSH levels (180.3±21.9 µg/g). ALD also increased cystathionine-γ-lyase immunoreactivity in the gastric mucosa. Pretreatment with Lawesson's reagent (27 µmol/kg) attenuated ALD-mediated gastric damage (15.77±5.3 mm2); reduced TNF-α, IL-1β, and MDA formation (1502±150.2 pg/mL, 632.3±43.4 pg/mL, 78.4±7.6 nmol/g, respectively); lowered MPO activity (11.7±2.8 U/mg); and increased the level of GSH in the gastric tissue (397.9±40.2 µg/g). Glibenclamide alone reversed the gastric protective effect of Lawesson's reagent. However, glibenclamide plus diazoxide did not alter the effects of Lawesson's reagent. Our results suggest that Lawesson's reagent plays a protective role against ALD-induced gastric damage through mechanisms that depend at least in part on activation of ATP-sensitive potassium (KATP) channels.
https://doi.org/10.1590/1414-431X20133030
2388 downloads
11.
TIPIFICAÇÃO GENÉTICA, ATRAVÉS DA TÉCNICA DE SPOLIGOTYPING, DE ISOLADOS DE MYCOBACTERIUM BOVIS EM ANIMAIS ABATIDOS NA REGIÃO METROPOLITANA DE SALVADOR, BAHIA, BRASIL
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Costa, A.C.F.
; Silva, N.S.
; Rocha, V.C.M.
; Rosales Rodriguez, C.A.
; Estrela-Lima, A.
; Moreira, E.L.T
; Madruga, C.
; Arruda, S.M.
; Ferreira Neto, J.S.
; Silva, M.C.A.
; Oliveira, E.M. de D.
.
RESUMO A tuberculose é uma enfermidade infecciosa crônica, que afeta mamíferos e aves e constitui um sério problema de saúde pública e animal. Objetivando realizar um levantamento molecular da enfermidade em bovinos abatidos em matadouros frigoríficos no Estado da Bahia, Brasil, foram analisadas as lesões pulmonares e de linfonodos mediastínicos de 43 carcaças de animais abatidos em três matadouros-frigoríficos localizados na Região Metropolitana de Salvador, Bahia. Sete isolados de Mycobacterium bovis foram identificados, através da técnica do spolygotyping, e discriminados em três diferentes espoligotipos (SB1055, SB0120 e SB0268) descritos no Brasil e em diversas áreas do mundo. Os resultados indicam que o método de diagnóstico utilizado pode contribuir para a criação de uma base de dados para o estudo epidemiológico da tuberculose bovina no Estado da Bahia.
ABSTRACT Tuberculosis is an infectious chronic disease that affects mammals and birds and constitutes a serious problem for public and animal health. Pulmonary and mediastinic lymph node lesions of 43 animals slaughtered in 3 slaughterhouses in the metropolitan region of the city of Salvador, Bahia, Brazil, were analyzed with the objective of obtaining a molecular survey of the disease in bovines slaughtered in slaughterhouses in the state. Seven isolates ofMycobacterium bovis were identified through the spoligotyping technique and classified into 3 different spoligotypes (SB1055, SB0120, SB0268), described in Brazil and in many areas worldwide. The results indicate that the diagnostic method utilized may contribute to the creation of a database for the epidemiologic study of bovine tuberculosis in the state of Bahia.
https://doi.org/10.1590/1808-1657v77p2332010
135 downloads
12.
Hemograma e hemogasometria de eqüinos submetidos à obstrução experimental de jejuno
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Costa, N.S.
; Ribeiro, G.
; Dória, R.G.S.
; Canola, P.A.
; Silva, P.C.
; Jorge, R.L.N.
; Fagliari, J.J.
.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia
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Foram utilizados oito eqüinos distribuídos em dois grupos, submetidos ou não à obstrução experimental do jejuno mediante a colocação de um balão intraluminal. Os animais do grupo 1 foram submetidos à enterotomia com colocação do balão sem distensão suficiente para provocar isquemia e os do grupo 2 à isquemia por obstrução do jejuno durante quatro horas. Para determinação do hemograma e da hemogasometria foram obtidas amostras de sangue venoso em quatro momentos: uma hora antes do procedimento cirúrgico (M1), ao final da obstrução/isquemia (M2) e uma hora (M3) e 18 horas (M4) após o início da reperfusão/desobstrução. Não houve diferença entre grupos nas contagens de hemácias, leucócitos totais, neutrófilos bastonetes, neutrófilos segmentados, linfócitos e monócitos, bem como no teor de hemoglobina. Houve diferença no volume globular em M2 e na contagem de eosinófilos em M3. Na hemogasometria, em ambos os grupos, registrou-se diminuição dos teores de sódio, potássio, cálcio ionizado e cloro, da pressão parcial de oxigênio e da saturação de oxiemoglobina. Os resultados indicam que o hemograma, isoladamente, não fornece informações conclusivas, enquanto a hemogasometria possibilita determinar, precocemente, o volume de reposição hidroeletrolítica a ser administrado em eqüino com abdômen agudo decorrente de obstrução de jejuno, auxiliando no tratamento e no melhor prognóstico da afecção intestinal.
Eight equines were distributed into two different groups. Those groups were submitted or not to an experimental jejunal obstruction. Animals from group 1 were submitted to an enterotomy with placement of an intraluminal balloon, without enough distention to cause ischemia; animals from group 2 were submitted to ischemia by jejunal obstruction during four hours. In order to determine the hemogram and blood gas analysis, blood samples from peripheral vein were obtained at four moments: one hour before the surgical procedure (M1); at the end of obstruction/ischemia (M2); one hour (M3) and 18 hours (M4) after the beginning of reperfusion/deobstruction. There was no difference among the groups related to the counting of erythrocytes, hemoglobin, total white cells, neutrophils (band), neutrophils (segmented), lymphocytes, and monocytes. There was difference in the globular volume in M2 and in the eosinophils counting in M3. In both groups, the blood gas analysis identified diminished of sodium, potassium, ionized calcium, and chloride amounts, and partial pressure of oxygen and oxihemoglobin saturation. The results indicate that the hemogram alone, do not give conclusive information while the blood gas analysis allows an early determination of the volume of hydroelectrolytic replacement to be given to one equine with acute abdomen due to jejunal obstruction, providing additional support to the treatment and a better prognosis to an intestinal affection.
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13.
Parasitismo de ovos de Tibraca limbativentris Stal (Hemiptera: Pentatomidae) na cultura do arroz no Maranhão
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Maciel, Alba A.S.
; Lemos, Raimunda N.S. de
; Souza, Joseane R. de
; Costa, Valmir A.
; Barrigossi, José A.F.
; Chagas, Evandro F. das
.
O percevejo-do-colmo, Tibraca limbativentris Stal, é um dos insetos mais prejudiciais à cultura do arroz no Brasil. Este trabalho avaliou a ocorrência de parasitóides em ovos de T. limbativentris no Maranhão. Os ovos coletados apresentaram em média um parasitismo de 32%. Os parasitóides identificados foram Telenomus podisi (Ashmead), Trissolcus urichi (Crawford) (Hymenoptera: Scelionidae) e Oencyrtus submetallicus (Howard) (Hymenoptera: Encyrtidae).
The rice stem bug, Tibraca limbativentris Stal, is an important pest of rice in Brazil. This work evaluated the occurrence of parasitoids in eggs of T.limbativentris egg parasitism in rice crops in the Maranhão State. The eggs collected exhibited an average parasitism of 32%. The parasitoids collected were Telenomus podisi (Ashmead), Trissolcus urichi (Crawford) (Hymenoptera: Scelionidae) and Oencyrtus submetallicus (Howard) (Hymenoptera: Encyrtidae).
3311 downloads
Cited 1 time in SciELO
14.
The gravitational wave detector "Mario Schenberg": status of the project
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Aguiar, O.D.
; Andrade, L.A.
; Camargo Filho, L.
; Costa, C.A.
; Araujo, J.C.N. de
; Rey Neto, E.C. del
; Souza, S.T. de
; Fauth, A.C.
; Frajuca, C.
; Frossati, G.
; Furtado, S.R.
; Furtado, V.G.S.
; Magalhães, N.S.
; Marinho Jr., R.M.
; Matos, E.S.
; Meliani, M.T.
; Melo, J.L.
; Miranda, O.D.
; Oliveira Jr., N.F.
; Ribeiro, K.L.
; Salles, K.B.M.
; Stellati, C.
; Velloso Jr., W.F.
.
The first phase of the Brazilian Graviton Project is the construction and operation of the gravitational wave detector Mario Schenberg at the Physics Institute of the University of São Paulo. This gravitational wave spherical antenna is planned to feature a sensitivity better than h = 10-21 Hz-1/2 at the 3.0-3.4 kHz bandwidth, and to work not only as a detector, but also as a testbed for the development of new technologies. Here we present the status of this detector.
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Cited 1 time in SciELO
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