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Search Results: 1 - 10 of 400428 matches for " Rosangela Assis;Fúrigo Júnior "
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Pré-tratamentos de mela?o de cana-de-a?úcar e água de macera??o de milho para a bioprodu??o de carotenóides
Valduga, Eunice;Valério, Alexsandra;Treichel, Helen;Luccio, Marco Di;Jacques, Rosangela Assis;Fúrigo Júnior, Agenor;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000800012
Abstract: this work studied the pretreatment of sugarcane molasses (cm) and corn steep liquor (cs) for the production of carotenoids by sporidiobolus salmonicolor (cbs 2636). the acid pretreatment removed less micronutrients than that with activated carbon and led to high removals of cu and mn. reduction in optical density of the prepared medium and removal of glucose from it were 22% and 7% for cm and 95% and 38% for cs, respectively. total carotenoids obtained with substrates pretreated with acids (541 mg/l) were higher than the results obtained when the medium was treated with activated carbon (208 mg/l).
Estudo cinético da obten??o de ésteres utilizando enzima lipozyme TL IM como catalisador
Skoronski, Everton;Bonetti, Thiago Medeiros;Jo?o, Jair Juarez;Fúrigo Júnior, Agenor;
Ciência e Tecnologia de Alimentos , 2010, DOI: 10.1590/S0101-20612010000400010
Abstract: in this work, the production of the aliphatic ester n-amyl octanoate by direct esterification using the enzyme lipozyme tl im as catalyst was studied. the influence of the initial concentration of the substrate on the initial rate of reaction was verified. the initial rate of the reaction was determined by the octanoic acid consumption over time. the kinetic models described in the literature did not fit to the experimental data. the maximum rate was reached at 40 oc. lipozyme tl im was inhibited by the initial concentration of the substrate
Head Space Solid Phase Micro-Extraction (HS - SPME) of volatile organic compounds produced by Sporidiobolus salmonicolor (CBS 2636)
Valduga, Eunice;Valerio, Alexsandra;Treichel, Helen;Nascimento Filho, Irajá;Fúrigo Júnior, Agenor;Di Luccio, Marco;
Ciência e Tecnologia de Alimentos , 2010, DOI: 10.1590/S0101-20612010000400023
Abstract: the aim of the present study was the assessment of volatile organic compounds produced by sporidiobolus salmonicolor (cbs 2636) using methyl and ethyl ricinoleate, ricinoleic acid and castor oil as precursors. the analysis of the volatile organic compounds was carried out using head space solid phase micro-extraction (hs - spme). factorial experimental design was used for investigating extraction conditions, verifying stirring rate (0-400 rpm), temperature (25-60 oc), extraction time (10-30 minutes), and sample volume (2-3 ml). the identification of volatile organic compounds was carried out by gas chromatography with mass spectrum detector (gc/msd). the conditions that resulted in maximum extraction were: 60 oc, 10 minutes extraction, no stirring, sample volume of 2.0 ml, and addition of saturated kcl (1:10 v/v). in the bio-production of volatile organic compounds the effect of stirring rate (120-200 rpm), temperature (23-33 oc), ph (4.0-8.0), precursor concentration (0.02-0.1%), mannitol (0-6%), and asparagine concentration (0-0.2%) was investigated. the bio-production at 28 oc, 160 rpm, ph 6,0 and with the addition of 0.02% ricinoleic acid to the medium yielded the highest production of vocs, identified as 1,4-butanediol, 1,2,2-trimethylciclopropilamine, beta-ionone; 2,3-butanodione, pentanal, tetradecane, 2-isononenal, 4-octen-3-one, propanoic acid, and octadecane.
Prescri??o, dispensa??o e regula??o do consumo de psicotrópicos anorexígenos em Belo Horizonte, Minas Gerais, Brasil
Carneiro, M?nica de Fátima Gontijo;Guerra Júnior, Augusto Afonso;Acurcio, Francisco de Assis;
Cadernos de Saúde Pública , 2008, DOI: 10.1590/S0102-311X2008000800005
Abstract: this retrospective study in belo horizonte, minas gerais, brazil, aimed to provide indicators on the sale and consumption of anorexigenic substances. during the first stage, 2,906 of 168,237 prescriptions received by pharmacies in 2003 were analyzed, showing low quality of prescriptions. projected consumption in defined daily doses was 19.75 ddd/1,000 inhabitants/day in 2003. fenproporex (59.8%) was the most widely consumed drug. one pharmacy was responsible for 39.8% of the pharmaceutical sales. during the second stage, 14,554 sales records from this "blockbuster" pharmacy were analyzed, from april to august 2005; 9.2% of sales were for anorexigenic products, 91.8% of which prescribed in association with another substance. the data suggest irrational use of anorexigenic drugs by these consumers and highlight the need for proper regulation of these products. it is important to understand both the role of pharmacies in this regulation and that of physicians in the rational use of these substances.
Produ??o de carotenoides: microrganismos como fonte de pigmentos naturais
Valduga, Eunice;Tatsch, Pihetra Oliveira;Tiggemann, Lídia;Treichel, Helen;Toniazzo, Geciane;Zeni, Jamile;Di Luccio, Marco;Fúrigo Júnior, Agenor;
Química Nova , 2009, DOI: 10.1590/S0100-40422009000900036
Abstract: carotenoids are natural dyes synthesized by plants, algae and microorganisms. application in many sectors can be found, as food dyeing and supplementation, pharmaceuticals, cosmetics and animal feed. recent investigations have shown their ability to reduce the risks for many degenerative diseases like cancer, heart diseases, cataract and macular degeneration. an advantage of microbial carotenoids is the fact that the cultivation in controlled conditions is not dependent of climate, season or soil composition. in this review the advances in bio-production of carotenoids are presented, discussing the main factors that influence the microbial production of these dyes in different systems.
Métodos de recupera??o pós-exercício: uma revis?o sistemática
Pastre, Carlos Marcelo;Bastos, Fábio do Nascimento;Netto Júnior, Jayme;Vanderlei, Luiz Carlos Marques;Hoshi, Rosangela Akemi;
Revista Brasileira de Medicina do Esporte , 2009, DOI: 10.1590/S1517-86922009000200012
Abstract: the post-exercise recovery consists in restoring the body systems to baseline condition, providing balance and preventing injuries installation and, in that sense; it becomes an important aspect of every fitness program, at any levels of performance, but especially in higher levels. the objective of this review was to gather information and to describe the responses provided by post-exercise recovery methods, such as cryotherapy, contrast water immersion, massage and active recovery, providing an update on this issue. medline, scielo and lilacs databases were used, as well as the sportsdiscus list of journals. only randomized controlled and non-controlled clinical essays, in addition to review articles concerning the proposed topic were included. our choice was for the search terms: cryotherapy, massage, active recovery, thermotherapy, immersion and exercise, individually and combined. it was observed that some studies report that cryotherapy is harmful concerning post-exercise recovery, once it reduces performance immediately after the technique application. on the other hand, studies point it as being beneficial due to its reduction in the creatine kinase level after exercise, avoiding hence muscle damage. concerning contrast water immersion, although it presents significance when it comes to blood lactate removal, its effectiveness needs to be better discussed. regarding massage and active recovery, the main described biases relate to the pressure and intensity of the exercise, respectively. among the techniques, contrast water immersion and active recovery seem to have similar effects concerning lactate removal and creatine kinase decrease. it is highlighted that the exposure time is crucial for all methods. however, several studies do not try to identify the real physiological effects promoted by the techniques, having them in limited use. therefore, the inconsistency of the results found suggests that the assessed variables used as a recovery method should be
Les?es desportivas na ginástica artística: estudo a partir de morbidade referida
Hoshi, Rosangela Akemi;Pastre, Carlos Marcelo;Vanderlei, Luiz Carlos Marques;Netto Júnior, Jayme;Bastos, Fábio do Nascimento;
Revista Brasileira de Medicina do Esporte , 2008, DOI: 10.1590/S1517-86922008000500008
Abstract: introduction: the levels of biomechanical demands due to the high level of difficulty in the gestures accomplishment make artistic gymnastics (ag) a modality with high risk of injuries. thus, it is necessary that the aspects concerned with them are controlled. objective: to analyze the occurrence of injuries in artistic gymnastics, associating them with specific risk factors of the modality and of the athlete from reported morbidity survey. methods: 54 gymnasts randomly recruited have been interviewed and classified according to their competitive level into two categories: regional and national. the reported morbidity questionnaire (rmq) was used with the purpose to collect data on the injury's nature, body region and gymnastic apparatus. data were organized and presented under frequency distribution and analyzed variables. the variables were analyzed according to their level of association from the goodmann's test for contrasts between multinomials populations considering significant value p<0.05. results: 39 (71.70%) athletes have reported injury during the season, being 22 of them (56.41) women and 17 (43.59%) men. in the regional male and female categories and in the national female, the largest reported occurrence of injuries was articular, corresponding to 55.56%, 50% and 45.45% of the total, respectively. for the national female category, the lower limbs were the most affected (68.18%). in female, the most frequent injuries occurred in the jumps (79.41%), while in national male the highest number of complaints has been reported in the support and suspension moves (72%). conclusions: there is high frequency of injuries, especially in the joints and lower limbs, being the jump events the most mentioned concerning occurrence. it has also been observed that the higher the level of demand, the higher the occurrence of injuries.
Stomach contents of the pelagic stingray (Pteroplatytrygon violacea) (elasmobranchii: dasyatidae) from the tropical atlantic
Dráusio Pinheiro Véras,Teodoro Vaske Júnior,Fábio Hissa Vieira Hazin,Rosangela Paula Lessa
Brazilian Journal of Oceanography , 2009, DOI: 10.1590/s1679-87592009000400008
época de matura??o, dispers?o, colheita e qualidade fisiológica de sementes de sempre-viva (Syngonanthus elegans (Bong.) Ruhland)
Nunes, Ubirajara Russi;Nunes, Silvia Cristina Paslauski;Andrade Júnior, Valter Carvalho de;Assis Júnior, Sebasti?o Louren?o de;Bispo, Fábio Henrique Alves;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000600015
Abstract: the aims of this work were to evaluate the maturation time, dispersion, crop and the physiological quality seeds of star flowers (syngonanthus elegans (bong.) ruhland), in diamantina, mg. s. elegans chapters were picked up in five times (20/06/05, 20/07/05, 20/ 08/05, 20/09/05 and 20/10/05) in three places of natural production, inside the campus of ufvjm in a neossolo quartzarênico órtico típico (places 1 e 2) and neossolo quartzarênico hidromórfico típico (place 3) and after submitted to the germination and vigor tests. physiological quality of seeds of s. elegans were affected by time and crop place. crop management should be accomplished as the harvest after the beginning of the period of dispersion of seeds (june to october) and with the chapters totally open.
Amostragem e variabilidade espacial de atributos físicos de um latossolo vermelho em Mossoró, RN
Amaro Filho, Joaquim;Negreiros, Ronnie Fábio Delmiro de;Assis Júnior, Raimundo Nonato de;Mota, Jaedson Cláudio Anunciato;
Revista Brasileira de Ciência do Solo , 2007, DOI: 10.1590/S0100-06832007000300001
Abstract: the soils, some those considered homogenous, show some spatial and temporal variability of its physical, chemical and biological atributes. to define this variability is very important to efficient soil management. this study had the objective of investigating the spatial variability of some physical attributes of an red latosol in mossoró, state of rio grande do norte, brazil, to determine the best procedure for soil sampling. soil samples were collected on a 100 x 100 m area, in 10 m grid marking, from the 0-0.2 m soil layer, totaling 100 samples. the following soil attributes were analyzed: particle size, bulk density, particle density, total porosity, and water retention at tensions of 0.033 and 1,500 mpa. the data were analyzed through descriptive statistics and geostatistics. results indicated that soil variability, measured by the coefficient of variation, was low for sand, bulk density, particle density and total porosity and intermediary for silt, clay, field capacity, and permanent wilting point. the distribution frequency for most analyzed variables was normal, with exception of sand, bulk density and total porosity. the mapping of the studied variables suggested that the establishment of homogeneous subareas would make the natural resources management, especially of water, more effective.
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