Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

4 ( 1 )

3 ( 1 )

2020 ( 80 )

2019 ( 897 )

Custom range...

Search Results: 1 - 10 of 591328 matches for " Márcia Maria Guedes Alcoforado de;Ramos "
All listed articles are free for downloading (OA Articles)
Page 1 /591328
Display every page Item
Custos de oportunidade para aloca??o de efluentes nas áreas plantadas de cana na bacia do rio Pirapama
Germano, Bruna da Nóbrega;Moraes, Márcia Maria Guedes Alcoforado de;Ramos, Francisco de Sousa;
Estudos Econ?micos (S?o Paulo) , 2010, DOI: 10.1590/S0101-41612010000300007
Abstract: this paper identifies the opportunity costs in effluent allocation over sugarcane crop acres located more than 2km away from the agroindustry plant jb, during the harvest season. the optimization problem described herein explains why these opportunity costs are usually missed. actually, these costs derive from the marginal values associated to the decision-making variables concerning an economic benefit maximization problem resolved using the general algebraic modeling system (gams) and from the dual analysis of the linearized problem therein. besides, different effluent transportation and effluent treatment cost coefficients were considered in simulating possible impacts and benefits regarding effluent allocation. this approach supports the optimal definition of charging and/or subsidizing schemes best suited to allocate effluents over sugarcane crops located farther away from hub agroindustry plants, not just for more disseminated productivity gains, but also for best compliance with river water quality constraints.
Nutrient Accumulation in Amaryllis  [PDF]
Caroline de Moura D’Andréa Mateus, Kathia Fernandes Lopes Pivetta, Roberto Lyra Villas B?as, Regina Maria Monteiro de Castilho, Maria Márcia Pereira Sartori, Renata Bachin Mazzini-Guedes
American Journal of Plant Sciences (AJPS) , 2018, DOI: 10.4236/ajps.2018.92020
Abstract: Amaryllis plants (Hippeastrum hybrid, in the family Amaryllidaceae) are cultivated in Brazil mainly for bulb export. Studies about the nutrient accumulation dynamics by the species are yet incipient when considering Brazilian cultivation conditions. The objective was to determine the nutrient accumulation in amaryllis “Orange Souvereign” cultivated in the field. The experimental design was entirely randomized with four replications and 14 collection periods (at 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, and 420 days after planting). Sampled plants were divided into leaves, bulb, and roots, which were used for determination of nutrient accumulation by leaves (aerial part) and bulb + roots (underground part). Nutrient accumulation of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, and Zn was calculated for each collection period, and then represented by curves of macro and micronutrient accumulation, as well as accumulation percentages for each plant part. For most macro and micronutrients, the interval of maximum accumulation fell from 301 to 420 days after planting, matching with the cycle final stage of plants cultivated in the field. Accumulated macronutrients by amaryllis plants along the cultivation cycle was, in g·plant-1: 1.57 N; 0.19 P; 2.58 K; 0.64 Ca; 0.20 Mg; and 0.29 S, following the descending order: K > N > Ca > S > Mg > P. Accumulated micronutrients, in mg·plant-1, was: 2.18 B; 1.17 Cu; 22.33 Fe; 2.19 Mn; and 4.09 Zn, following the descending order: Fe > Zn > Mn > B > Cu.
Conduta obstétrica no óbito fetal
Aquino, Márcia M A de;Guedes, Ana Cláudia;Mesquita, Maria Rita S;Hernandez, Mirie;Cecatti, José Guilherme;
Revista Brasileira de Ginecologia e Obstetrícia , 1998, DOI: 10.1590/S0100-72031998000300004
Abstract: although 80 to 90% of all dead fetuses may be spontaneously eliminated after two to three weeks from death, labor induction has been the mostly used management. the purpose of the current study was to evaluate the results of labor induction for pregnancies with fetal death and gestation age above 20 weeks. it was a descriptive clinical study which was performed at the hospital e maternidade leonor mendes de barros in s?o paulo, brazil. one hundred and twenty-two pregnancies with fetal death were evaluated regarding their social and demographic characteristics, causes of fetal death, previous pregnancies history and delivery (induction, route, complications). the statistical procedures used were estimation of mean and standard deviation and c2. the main causes of fetal death were hypertension and infections. the mostly used drug for labor induction was misoprostol (37.7%) followed by oxytocin (19.7%), while 27% of cases had spontaneous onset of labor. the mean time of induction was 3 hours. the majority of women had vaginal delivery and cesarean section was performed in 9.1% of them. it is concluded that labor induction for fetal death is safe and efficient, irrespective of the method used. misoprostol when used in the vagina is specially useful for cases with an unripe cervix because of the modifying effect of the drug on the cervix.
Antioxidant, Antibacterial and Antitumor Activity of Ethanolic Extract of the Psidium guajava Leaves  [PDF]
Tatiane Vieira Braga, Rosana Gon?alves Rodrigues das Dores, Camila Soncin Ramos, Fernanda Cristina Gontijo Evangelista, Letícia Márcia da Silva Tinoco, Fernando de Pilla Varotti, Maria das Gra?as Carvalho, Adriano de Paula Sabino
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.523365
Psidium guajava L. has extensive use in folk medicine. The aim of this study was to quantify the levels of phenolic, flavonoids, antioxidant activity, leathality assay and antibacterial and antitumoral activities of the extract of P. guajava. In the dry guava extract there were high levels of phenolics (766.08 ± 14.52 mg/g), flavonoids (118.90 ± 5.47 mg/g) and antioxidant activity (87.65%). The LD50 was 185.15 μg/ml. The MIC value was 250 μg/ml for Streptococcus mutans, Streptococcus mitis and Streptococcus oralis. IC50 of the extract tested in the HeLa, RKO and Wi cell lines was 15.6 ± 0.8 μg/ml, 21.2 ± 1.1 μg/ml and 68.9 ± 1.5 μg/ml, respectively. The results of all analyses allow us to conclude that the dry extract of guava leaves has promising activity to be applied topically in the oral cavity or in the development of antitumor formulation or even be used as a functional food.
Standardization of Sampling for Isolation of Exosome-Like Small-Extracellular Vesicles from Peripheral Blood from Reproductive-Aged Women  [PDF]
Jéssica Maria Diehl, Júlia Abbade Tronco, Natália Prearo Mo?o, Graziela Gorete Romagnoli, Ana Clara Faquineli Cavalcante Mendes de Avila, Juliano Coelho da Silveira, Márcia Guimar?es da Silva, Bruna Ribeiro de Andrade Ramos
Open Journal of Obstetrics and Gynecology (OJOG) , 2018, DOI: 10.4236/ojog.2018.811107
Abstract: Exosome-like small-extracellular vesicles (sEVs) are extracellular vesicles that act in intercellular communication and are involved in several biologic and pathologic processes. While sEVs increase the stability of their cargo molecules, there is still a need for standardization of sampling and isolation of these microvesicles. We aimed to determine the best sampling method for isolation of sEVs from peripheral blood from reproductive-aged women. Material and Methods: We included samples of plasma from our biobank collected in 2014 by venipuncture in heparin tubes and stored at -80°C. We also included blood samples collected in heparin tubes and Ethylenediamine tetraacetic acid (EDTA) tubes and stored at -80°C for one to two weeks prior processing. All blood samples were collected from the same nine reproductive-aged female volunteers. sEVs were isolated from plasma by ultracentrifugation and filtration and indirectly quantified using Pierce BCA Protein Assay kit. Transmission electron microscopy (TEM) and Nano Tracking Analysis (NTA) were performed to confirm the isolation of sEVs. Results and Discussion: TEM and NTA confirmed the isolation of sEVs. Protein concentration of short-time stored heparin samples was not statistically different from long-time stored heparin samples (1847.2 ± 651.4 vs. 2363.2 ± 1025.1, p = 0.14). There was no difference between heparin and EDTA plasma samples recently collected (2363.2 ± 1025.1 vs. 2044.8 ±
A constru??o de uma proposta pedagógica para creches: uma trajetória de pesquisa em psicologia do desenvolvimento
Ferreira, Maria Clotilde Rossetti;Carvalho, Mara Ignez Campos de;Rubiano, Márcia Regina Bonagamba;Oliveira, Zilma de Moraes Ramos de;
Paidéia (Ribeir?o Preto) , 1991, DOI: 10.1590/S0103-863X1991000100002
Abstract: our investigations aim to study some mediators of the child-environment interaction, based on a socio-interactionist approach which conceives the construction of knowledge, of language and of subjectivity as occurring by and through the interactions the individual establishes with other people, in a setting organized and structured by the adults according to their conceptions about child development and education. some basic points have been raised for the construction of educational proposals for day care centers, which require a revision of the role of the caretaker and of day care professionals.
A Rapid and Simple Procedure for the Establishment of Human Normal and Cancer Renal Primary Cell Cultures from Surgical Specimens
Maria Jo?o Valente,Rui Henrique,Vera L. Costa,Carmen Jerónimo,Félix Carvalho,Maria L. Bastos,Paula Guedes de Pinho,Márcia Carvalho
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0019337
Abstract: The kidney is a target organ for the toxicity of several xenobiotics and is also highly susceptible to the development of malignant tumors. In both cases, in vitro studies provide insight to cellular damage, and represent adequate models to study either the mechanisms underlying the toxic effects of several nephrotoxicants or therapeutic approaches in renal cancer. The development of efficient methods for the establishment of human normal and tumor renal cell models is hence crucial. In this study, a technically simple and rapid protocol for the isolation and culture of human proximal tubular epithelial cells and human renal tumor cells from surgical specimens is presented. Tumor and normal tissues were processed by using the same methodology, based on mechanical disaggregation of tissue followed by enzymatic digestion and cell purification by sequential sieving. The overall procedure takes roughly one hour. The resulting cell preparations have excellent viabilities and yield. Establishment of primary cultures from all specimens was achieved successfully. The origin of primary cultured cells was established through morphological evaluation. Normal cells purity was confirmed by immunofluorescent staining and reverse transcription-polymerase chain reaction analysis for expression of specific markers.
Resistance of Klebsiella Pneumoniae clinical isolates: linkage of outer membrane proteins (omps) with production esbls
Marques, Lívia érika Carlos;Oliveira, Danielle Ferreira de;Marques, Márcia Maria Mendes;Silva, Ana Raquel Araújo da;Alves, Carlucio Roberto;Guedes, Maria Izabel Florindo;
Brazilian Journal of Microbiology , 2011, DOI: 10.1590/S1517-83822011000200009
Abstract: three isolates of klebsiella pneumoniae, collected from the university hospital in fortaleza, brazil, were analyzed to determine their resistance to multiple antibiotics. the results of this study showed that the resistance of the clinically isolated bacteria is associated with the production of extended-spectrum beta-lactamases (eslbs) and loss of outer membrane proteins.
Isolamento de Salmonella Braenderup em arara-azul (Anodorhynchus hyacinthinus)
Allgayer, Mariangela Costa;Oliveira, Sérgio José de;Mottin, Vanessa Daniele;Loiko, Márcia Regina;Abilleira, Fernanda;Guedes, Neiva Maria Robaldo;Passos, Daniel Thompsen;Weimer, Tania de Azevedo;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782009005000171
Abstract: the sanitary monitoring of free-living hyacinth macaw (anodorhynchus hyacinthinus) allows adjusting the management in altered natural habitat. to evaluate the occurrence of salmonella spp. it was collected cloacal swabs of this nestlings species, in the pantanal wetlands, in the state of mato grosso do sul, brazil. one salmonella-like colony was serologically typed and identified as salmonella braenderup. due to the high zoonotical potential of this microorganism, it is important an effective sanitary control of wildlife psittacines. in the literature searched it was not found any report on isolation of this bacterium in hyacinth macaw for both free-living and captive animals.
Farmacovigilancia da heparina no Brasil
Junqueira, Daniela Rezende Garcia;Viana, Thércia Guedes;Peixoto, Eliane R. de M;Barros, Fabiana C. R. de;Carvalho, Maria das Gra?as;Perini, Edson;
Revista da Associa??o Médica Brasileira , 2011, DOI: 10.1590/S0104-42302011000300017
Abstract: objective: to investigate the biological origin of injectable unfractioned heparin available in brazilian market by discussing the impact of the profile of commercial products and the changes in heparin monograph on the drug safety. methods: the anvisa data base for the registered products of pharmaceutical companies and the dictionary of pharmaceutical specialties (def 2008/2009) were searched. a survey with industries having an active permission for marketing the drug in brazil was conducted. results: five companies were granted a permission to market unfractioned heparin in brazil. three of them are porcine in origin and two of them are bovine in origin, with only one explicitly showing this information in the package insert. the effectiveness and safety of heparin studied in non-brazilian populations may not represent the brazilian reality, since most countries no longer produce bovine heparin. the currently marketed heparin has approximately 10% less anticoagulant activity than that previously produced and this change may have clinical implications. conclusions: evidence about the lack of dose interchangeability between bovine and porcine heparins and the unique safety profile of these drugs indicates the need to follow the treatment and the patients' response. events threatening the patient's safety must be reported to the pharmacovigilance system in each particular country.
Page 1 /591328
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.