Biological Accumulation
Mostrando 13-24 de 400 artigos, teses e dissertações.
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13. NANOTOXICOLOGIA DE NANOPARTÍCULAS DE PRATA: TOXICIDADE EM ANIMAIS E HUMANOS
Silver nanoparticles (AgNPs) have important antimicrobial activity. These nanoparticles are present in several commercial products, leading to human and environmental exposure. This review presents a critical view of the toxic effects of Ag NPs on in vitro and in vivo biological models. It is noteworthy that the toxicity of AgNPs is dependent on several para
Quím. Nova. Publicado em: 2019-02
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14. Development and characterization of a novel bulk-fill elastomeric temporary restorative composite
Abstract Objectives: This study investigated the physical and mechanical properties, antibacterial effect and biocompatibility of novel elastomeric temporary resin-based filling materials (TFMs) containing zinc methacrylate (ZM). Material and Methods: Experimental TFMs were prepared by mixing the zinc methacrylate with monomer, co-monomer, photoinitiator a
J. Appl. Oral Sci.. Publicado em: 10/12/2018
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15. Effect of Nutrient Sources on the Alginate Accumulation in the Culture Liquid of Azotobacter vinelandii D-05 and Obtaining Biocomposite Materials
ABSTRACT Using the classic biotechnological methods, the dependence of A. vinelandii D-05 culture alginate production from the media carbon and nitrogen content was investigated. The maximal alginate production was observed during cultivation bacterium in the medium with 2 to 4% of sucrose, but the maximal growth was found in the medium with 4% glucose. It w
Braz. arch. biol. technol.. Publicado em: 06/08/2018
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16. Isoflavonoid composition and biological activity of extracts from soybean seedlings treated by different elicitors
Abstract Time-course and dose-response experiments were carried out to establish the ability for synthesizing isoflavonoids of soybean seedlings (cv. Soyica P34) treated with salicylic (SA) and isonicotinic acids (INA). Then, 25 structurally-related compounds were evaluated for their isoflavonoid-eliciting activity. Next, the antimicrobial and antioxidant ac
An. Acad. Bras. Ciênc.. Publicado em: 26/07/2018
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17. The role of ClpX in erythropoietic protoporphyria
ABSTRACT Hemoglobin is an essential biological component of human physiology and its production in red blood cells relies upon proper biosynthesis of heme and globin protein. Disruption in the synthesis of these precursors accounts for a number of human blood disorders found in patients. Mutations in genes encoding heme biosynthesis enzymes are associated wi
Hematol., Transfus. Cell Ther.. Publicado em: 2018-06
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18. Biological survey of a cloud forest in southwestern Mexico: plants, amphibians, reptiles, birds, and mammals
Abstract: Cloud forest ecosystems contain unique flora and fauna characterized by high levels of richness and endemism. However, this ecosystem is one of the most threatened because of land-use changes stemming from anthropogenic activities. Therefore, biological inventories are necessary to adequately assess the effects of land-use changes on species now an
Biota Neotrop.. Publicado em: 12/04/2018
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19. Developmental Toxicity of (4S)-2- (4-hydroxy-3-methoxyphenyl) thiazolidine-4-carboxylic acid in Zebrafish ( Danio rerio )
ABSTRACT (4S)-2-(4-hydroxy-3-methoxyphenyl)thiazolidine-4-carboxylic acid is new synthesized substance obtained from cysteine and valine. Thiazolidine derivates have important biological responses so scientists work intensively on these compounds in recent years. It is obvious that thiazolidine contained compounds will be used in future in the pharmaceutical
Braz. arch. biol. technol.. Publicado em: 21/08/2017
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20. Power amplifier circuits for functional electrical stimulation systems
Abstract Introduction: Functional electrical stimulation (FES) is a technique that has been successfully employed in rehabilitation treatment to mitigate problems after spinal cord injury (SCI). One of the most relevant modules in a typical FES system is the power or output amplifier stage, which is responsible for the application of voltage or current puls
Res. Biomed. Eng.. Publicado em: 2017-06
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21. Diagnosis and treatment of chronic lymphocytic leukemia: recommendations from the Brazilian Group of Chronic Lymphocytic Leukemia
ABSTRACT Chronic lymphocytic leukemia is characterized by clonal proliferation and progressive accumulation of B-cell lymphocytes that typically express CD19+, CD5+ and CD23+. The lymphocytes usually infiltrate the bone marrow, peripheral blood, lymph nodes, and spleen. The diagnosis is established by immunophenotyping circulating B-lymphocytes, and prognosi
Rev. Bras. Hematol. Hemoter.. Publicado em: 2016-12
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22. Elicitation Enhanced the Production of Phenolic Compounds and Biological Activities in Hairy Root Cultures of Bitter melon ( Momordica charantia L.)
ABSTRACT Momordica charantia (Cucurbitaceae) is an important vegetable and also medicinal crop which produces the bioactive compounds for various biological activities with potential uses in human health. The present investigation relates to elicitors of jasmonic acid (JA) and salicylic acid (SA) to enhance biomass accumulation and phenolic compound producti
Braz. arch. biol. technol.. Publicado em: 03/11/2016
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23. Decline of phosphorus, copper, and zinc in anaerobic swine lagoon columns receiving pretreated influent
ABSTRACT Land application of both anaerobic lagoon liquid and sludge can increase nutrient accumulation beyond the soil’s assimilative capacity and become a threat to water quality in regions with intensive, confined swine production. In a 15-month meso-scale column study, we evaluated the effect of manure pretreatment on the reduction of total suspended s
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-10
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24. A DETERMINAÇÃO DOS PRODUTOS AVANÇADOS DE GLICAÇÃO (AGES) E DE LIPOXIDAÇÃO (ALES) EM ALIMENTOS E EM SISTEMAS BIOLÓGICOS: AVANÇOS, DESAFIOS E PERSPECTIVAS
Advanced glycation (AGEs) and lipoxidation (ALEs) products are formed through specific condensation reactions between nucleophiles (amino groups of free amino acids or their residues in peptides, aminophospholipids or proteins) and electrophiles (carbonyls of reducing sugars, oxidized lipids or others) generating well-defined sets of covalent adducts. The ε
Quím. Nova. Publicado em: 2016-06