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123-I ioflupane (Datscan®) presynaptic nigrostriatal imaging in patients with movement disorders BABT
Soriano Castrejón,Angel; García Vicente,Ana María; Cortés Romera,Montserrat; Cano,Julia Vaamonde; Marina,Sonia Rodado; Poblete García,Victor Manuel; Ruiz Solís,Sebastián; Talavera Rubio,María del Prado.
123-I Ioflupane (Datscan®) presynaptic imaging has been shown to have a significant utility in the assessment of patients with movement disorders 123-I Ioflupane SPECT is able to distinguish between Parkinson’s disease (PD) and other forms of parkinsonism without degeneration of the nigrostriatal pathway, including a common movement disorder such as essential tremor, and to assess disease progression in PD and other neurodegenerative disorders involving the substantia nigra.
Tipo: Info:eu-repo/semantics/article Palavras-chave: 123-I Ioflupane; Dopamine transporter imaging; Movement disorders; Parkinson’s disease.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000700017
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40K, 226Ra AND 228Ra SERIES IN BOVINE AND POULTRY FEED AND IN DICALCIUM PHOSPHATE (DCP) SAMPLES BY GAMMA-RAY SPECTROMETRY BABT
Luz Filho,Isaias Venancio da; Scheibel,Viviane; Appoloni,Carlos Roberto.
The aim of this study is to determine the amounts of radionuclides' activity present in samples of feed for young and adult chicken and feed for dairy and beef cattle, as well as in dicalcium phosphate (DCP) (CaHPO4), used as a nutritional supplement for animal feed. Radioactivity in these samples is due to the presence of the 238U and 232Th radioactive series, as well as their daughter. In addition, as it is for environmental samples, the activity of 40K should be an important source of radioactivity in all analyzed samples. Gamma rays were measured using a standard spectroscopy system, with a high-resolution HPGe detector. Measured activities in feed samples ranged from 0.23 to 1.51 Bq.kg-1, 0.67 to 4.21 Bq.kg-1, 0.29 to 1.63 Bq.kg-1 and 236 to 402...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gamma Ray Spectrometry; Natural radioactivity; Animal Feed; Dicalcium phosphate (DCP); Phosphate fertilizers.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100506
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A biological treatment technique for wool textile BABT
Xiao-Wei,Yu; Guan,Wen-Jun; Yong-Quan,Li; Ting-Jing,Guo; Ji-Dong,Zhou.
A biological treatment technique for wool textile was carried out by enzymes degradation coupled with H2O2 oxidation. The results demonstrated that the technique had ideal effects on wool textile such as better softness, plump and less loss of bursting stress. Because of mild reaction conditions, less textile damage and less environmental pollution, this technique for wool textile treatment could have promising prospect.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wool textile decrement; Oxidation pretreatment; Enzyme degradation; L86 enzymes.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600001
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A Biosensor Using Poly(4-Aminophenol)/acetylcholinesterase modified graphite electrode for the detection of dichlorvos BABT
Melo,Edmar Isaías; Franco,Diego Leoni; Afonso,André Santiago; Rezende,Hélen Cristine; Brito-Madurro,Ana Graci; Madurro,João Marcos; Coelho,Nívia Maria Melo.
The properties of poly(4-aminophenol) modified graphite electrode as material for the immobilization of acetylcholinesterase were investigated by the Cyclic Voltammetry, Electrochemical Impedance Spectroscopy and Atomic Force Microscopy. The polymer was deposited on graphite electrode surface by the oxidation of 4-aminophenol and then acetylcholinesterase was immobilized on the surface of the electrode. The biosensor coupled in the continuous flow system was employed for the detection of dichlorvos. The detection and quantification limits were 0.8 and 2.4 μmol L-1 dichlorvos, respectively. Graphite electrodes modified with the poly(4-aminophenol) showed to be an efficient and promising material for immobilization of acetylcholinesterase enzyme. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Graphite; Poly(4-aminophenol); Biosensor; Dichlorvos.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600018
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A bovine teat papilloma specimen harboring Deltapapillomavirus (BPV-1) and Xipapillomavirus (BPV-6) representatives BABT
Claus,Marlise Pompeo; Lunardi,Michele; Alfieri,Amauri Alcindo; Otonel,Rodrigo Alejandro Arellano; Ferracin,Lara Munique; Fungaro,Maria Helena Pelegrinelli; Alfieri,Alice Fernandes.
The common occurrence of multiple papillomavirus infections has been shown in several studies involving the human host. However, investigations with the aim of identifying mixed papillomavirus infections in cattle have been conducted only recently. In the current work we describe a co-infection with two different bovine papillomavirus (BPV) types that was identified in a bovine teat papilloma. The skin wart was obtained from a cow belonging to a Brazilian beef herd. A PCR assay was carried out with the FAP primer pair, which amplifies a partial segment of the L1 gene (approximately 478 bp), and the amplicon was submitted to direct sequencing. Because nucleotide sequences with satisfactory quality scores were not obtained, the amplicon was cloned and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cattle; Cutaneous papillomatosis; BPV; Co-infection.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700012
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A chemically defined medium for production of actinomycin D by Streptomyces parvulus BABT
Queiroz Sousa,Maria de Fátima Vieira de; Lopes,Carlos Edison; Pereira Júnior,Nei.
A chemically defined medium consisting of D(+)fructose, L(-)threonine, K2HPO4, MgSO4.7H2O, ZnSO4.7H2O, CaCl2.2H2O, FeSO4.7H2O and deionized water, was developed to maximize the synthesis of actinomycin D by the Streptomyces parvulus DAUFPE 3124 strain. This medium resulted in the maximum antibiotic concentration of 133mg/L while using the original medium the production of actinomycin D was poor not surpassing 43mg/L.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Actinomycin D; Production; Streptomyces. parvulus; Synthetic medium.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300002
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A comparative evaluation of antibacterial potential of some plants used in indian traditional medicine for the treatment of microbial infections BABT
Chattopadhyay,Rabi Ranjan; Bhattacharyya,Subir Kumar; Medda,Chiranjib; Chanda,Sunanda; Bag,Anwesa.
A comparative in vitro antibacterial potential of extracts (aqueous and ethanol) of five important medicinal plants (Aegle marmelos, Azadirachta indica, Terminalia chebula, Mangifera indica and Ocimum sanctum) were investigated using microbial growth inhibition assays against the common human pathogenic bacteria (Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli) of clinical origin. All the plant materials showed varying degrees of strain specific inhibitory action and ethanol extract of the plant materials showed higher antibacterial activity than their aqueous counterparts. Besides, T. chebula and A. marmelos had the strongest antibacterial activity out of which, T. chebula possessed a wider spectrum and a superior antibacterial...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pathogenic bacteria; Medicinal plants; Antibacterial potential; Comparative study.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500009
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A comparative study on fungal laccases immobilized on chitosan BABT
Araújo,José Hilton Bernardino de; Uemura,Vinicius Oliveira; Moraes,Flavio Faria de; Barbosa,Aneli de Melo; Zanin,Gisella Maria.
The phenoloxidase enzyme laccase from the cultures of the Pleurotus ostreatus and Botryosphaeria sp. and a commercial laccase from Aspergillus sp. were immobilized on chitosan of pharmaceutical degree by adsorption followed by crosslinking. Different immobilization conditions in relation to the granulometry of support and amount of enzymatic laccase extract used were tested, aiming at reaching high enzymatic activity with the immobilized enzyme. Two different substrates, ABTS and DMP, were used for the determination of enzymatic activity. The highest enzymatic activity was obtained when 1.0mg/mL of the enzymatic laccase extract from Botryosphaeria sp. was used with 1.0g of support (200 mesh). These immobilized enzymes are to be applied to the improvement...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Laccases; Immobilization; Chitosan.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400001
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A comparison between enzyme immunoassay and HPLC for ochratoxin A detection in green, roasted and instant coffee BABT
Fujii,Simone; Ono,Elisabete Yurie Sataque; Ribeiro,Ricardo Marcelo Reche; Assunção,Fernanda Garcia Algarte; Takabayashi,Cássia Reika; Oliveira,Tereza Cristina Rocha Moreira de; Itano,Eiko Nakagawa; Ueno,Yoshio; Kawamura,Osamu; Hirooka,Elisa Yoko.
An indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) for ochratoxin A (OTA) detection in green, roasted and instant coffees was developed using anti-OTA monoclonal antibody. Immunological reagents prepared were OTA-BSA (4.76 mg/mL), anti-OTA.7 MAb (2x10³-fold dilution) and HRP-anti IgG (10³-fold dilution). The detection limit was 3.73 ng OTA/g and correlation coefficients (r) between this immunoassay and high performance liquid chromatography were 0.98 for green coffee, 0.98 for roasted and 0.86 for instant. OTA levels detected by ic-ELISA were higher than by HPLC, with ELISA/HPLC ratio of 0.66 - 1.46 (green coffee), 0.96 - 1.11 (roasted) and 0.93 - 1.82 (instant). ELISA recoveries for OTA added to coffee (5 - 70 ng/g) were 81.53 % for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ochratoxin; Immunoassay; HPLC; Monoclonal antibody; Coffee.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200020
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A comparison of efficiency parameters of SSR markers and genetic diversity analysis in Amorphophallus paeoniifolius (Dennst.) Nicolson BABT
Mandal,Rupsanatan; Nag,Sumita; Tarafdar,Jayanta; Mitra,Surajit.
ABSTRACT Amorphophallus (elephant foot yam) is an herbaceous edible aroid crop which belongs to the family Araceae. The study was undertaken to identify the efficient SSR primer that could differentiate a set of 12 elephant foot yam genotypes. Various efficiency parameters, namely, Polymorphism Information Content (PIC), Marker Index (MI), Resolving Power (RP) and Diversity Index (DI) were studied for 11 primers. The relationship between the parameters was studied using Spearman rank correlation coefficient. Discrimination analysis was done to find out the most effective parameter. Finally Principal Coordinate Analysis (PCoA) and dendrogram was done to find out the genetic diversity among the germplasm. The SSR markers under this investigation will...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Elephant foot yam; Marker Index; Discrimination analysis and Principal coordinate analysis.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100436
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A comparison of methods to determine tannin acyl hydrolase activity BABT
Aguilar,Cristóbal; Christopher,Augur; Viniegra-González,Gustavo; Favela,Ernesto.
Six methods to determine the activity of tannase produced by Aspergillus niger Aa-20 on polyurethane foam by solid state fermentation, which included two titrimetric techniques, three spectrophotometric methods and one HPLC assay were tested and compared. All methods assayed enabled the measurement of extracellular tannase activity. However, only five were useful to evaluate intracellular tannase activity. Studies on the effect of pH on tannase extraction demonstrated that tannase activity was considerably under-estimated when its extraction was carried out at pH values below 5.5 and above 6.0. Results showed that the HPLC technique and the modified Bajpai and Patil methods presented several advantages in comparison to the other methods tested.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tannin acyl hydrolase; Assay; Polyurethane foam; Solid state fermentation; Tannase.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000300014
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A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor BABT
Cavalcanti,Renata da Silva; Farias Neto,Severino Rodrigues de; Vilar,Eudésio Oliveira.
Most electrochemical reactors present reactions with the growth and departure of gas bubbles which influence on the reactor hydrodynamics and this study is usually complex, representing a vast field for research. The present paper had as objective to study a bi-phase (gas-liquid) system aiming to foresee the influence of departure of hydrogen bubbles generated on effective electrode surface situated on cathodic semi-cell. Nevertheless, it was idealized that the gas was injected into the semi cell, through the effective electrode surface With this hypothesis, it was possible to study, and numerically analyze, the hydrodynamic behavior of the hydrogen bubbles in the interior of the study domain, applying concepts of computational fluid dynamics by using the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrogen; Bubble; CFD; Finite volumes; Electrochemical reactor.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400027
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A Computational Framework for Daily Power Flow Analysis Considering Photovoltaic Distributed Generation BABT
Gurski,Erico; Moraes,Fillipe Alexandre; Fritzen,Paulo Cícero; Benedito,Raphael Augusto de Souza.
Abstract In Brazil, the demand for the acquisition and installation of photovoltaic systems has grown exponentially and, with that, the importance of studies considering their effects on the distribution grids power flow also grows. Due to the intermittent nature of photovoltaic generation, it is important to approach the analysis in a discrete way, taking into account the changes in the power injections during the studied period. Thus, this article presents the daily analysis of the effects of photovoltaic generation on the distribution system through the computational implementation of a discretized power flow routine. The implemented routine can also analyze the effects of other distributed generations on distribution grids, whether those grids are...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Distributed Generation; Power Flow; Photovoltaic Systems.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000200207
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A cost effective fermentative production of glutathione by Saccharomyces cerevisiae with cane molasses and glycerol BABT
Anschau,Andréia; Santos,Lucielen Oliveira dos; Alegre,Ranulfo Monte.
This work aimed to evaluate the effect of sugar cane molasses and glycerol on glutathione (GSH) fermentation by Saccharomyces cerevisiae ATCC 7754 in flask culture using response surface methodology. Under optimized conditions (80 g/L of molasses and 60 g/L of glycerol), the highest GSH and biomass concentration achieved were 119.6 mg/L and 25.3 g/L, respectively. Further studies done in 5 L bioreactor resulted 241.3 mg/L GSH after 96 h in batch fermentation without amino acids addition and the concentration of biomass was 12.1 g/L. In batch fermentation with the addition of the three amino acids (4 mM cysteine, glycine and glutamic acid at 32 h), biomass reached to 25 g/L and GSH, 236.1 mg/L at 96 h of fermentation. The strategy of precursor amino acids...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glutathione; Fermentation; Fed Batch Culture; Amino Acids; Response Surface Methodology.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500017
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A dorsal fold in Gymnura micrura (Bloch and Scheneider, 1801) (Chondrichthyes: Gymnuridae) BABT
Nunes,Jorge Luiz Silva; Piorski,Nivaldo Magalhães.
This paper reports a dorsal fold which is a membranous structure located on the tail of two juvenile butterfly rays, Gymnura micrura (Bloch & Scheneider, 1801), caught through artisanal fishery in the shallow waters of Maranhão State (Brazil).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Elasmobranchii; Rays; Teratogeny; South America; Brazil.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200027
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A Histological Study on Venom Apparatus of Montivipera xanthina (Gray, 1849) (Serpentes, Viperidae) BABT
Kılıç,Dilara Çolak; Akat,Esra; Arıkan,Hüseyin.
ABSTRACT This is the first report describing morphological and histological structure of venom apparatus in Montivipera xanthina. The venom gland apparatus of M. xanthina was composed of four distinct parts, main venom gland, primary duct, accessory gland and secondary duct. The main venom gland was composed of acini. The accessory gland was formed by long and ramified tubules. Nine fangs were detected in one half of the upper jaw each at different stage of development. Only one tooth was functional and the eight remaining fangs form a replacement series. The venom apparatus of viperid snakes are the most effective venom-delivery system among vertebrates and have been the focus of scientific interests for many years. Despite this interest, there are few...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Montivipera xanthina; Venom gland; Fang; Dentine; Odontoblast.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100425
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A Histopathological, Immunohistochemical and Biochemical Investigation on the in vitro Antioxidant, Myeloprotective, Hematoprotective and Hepatoprotective Effects of Hypericum triquetrifolium Seed Extract Against Cyclophosphamide-Induced Toxicity BABT
Yildiz,Songul Cetik; Keskin,Cumali; Sahintürk,Varol; Ayhanci,Adnan.
Abstract The aim of this study was to investigate in vitro antioxidant properties and in vivo protective effects of the methanol extract of the Hypericum triquetrifolium Turra (HT) seed against acute hepatotoxicity, myelotoxicity and hematotoxicity in rats induced by cyclophosphamide (CP). In order to investigate in vivo protective effects of the HT extract on rat tissues, the rats were divided into nine groups. The toxic effects of CP and the protective effects of HT extract on nucleated cells that are produced by bone marrow, serum alanine transaminase (ALT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH) and oxidative stress index (OSI) levels were investigated biochemically. Additionally, liver tissue samples were examined for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cyclophosphamide; Hematoprotective; Hepatoprotective; Hypericum triquetrifolium; Myeloprotective; Pharmacological activity.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100303
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A ictiofauna da bacia do Rio Paraíba do Sul. Biodiversidade e padrões biogeográficos BABT
Bizerril,Carlos Roberto S. Fontenelle.
Fish fauna taxonomic composition and biogeographic informations of the Paraíba do Sul river basin are presented. Samples were taken in 75 units between January/1995 and June/1998. Species were identified and classified according its distributional pattern. Biogeographic analyses were conduced using macro, meso and micro scales. A total of 167 species were sampled, being 37 marine species. Among the marine taxa, Awaous tajasica and Oosthetus lineatus seems to spend their whole life histories in the freshwater environments. Sixteen species were introduced in the basin. Most of the native taxa inhabit the rivers’storage zone, mainly in pools. Faunistic similarities between the Paraíba do Sul river basin and other Brazilian rivers suggest that the environment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Paraíba do Sul river basin; Freshwater fishes; Southeastern Brazil.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200014
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A laboratory method to estimate the efficiency of plant extract to neutralize soil acidity BABT
Cassiolato,Marcelo E.; Miyazawa,Mário; Meda,Anderson R.; Pavan,Marcos A..
Water-soluble plant organic compounds have been proposed to be efficient in alleviating soil acidity. Laboratory methods were evaluated to estimate the efficiency of plant extracts to neutralize soil acidity. Plant samples were dried at 65ºC for 48 h and ground to pass 1 mm sieve. Plant extraction procedure was: transfer 3.0 g of plant sample to a becker, add 150 ml of deionized water, shake for 8 h at 175 rpm and filter. Three laboratory methods were evaluated: sigma (Ca+Mg+K) of the plant extracts; electrical conductivity of the plant extracts and titration of plant extracts with NaOH solution between pH 3 to 7. These methods were compared with the effect of the plant extracts on acid soil chemistry. All laboratory methods were related with soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant residue; Organic acid; Plant alkaline index.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200009
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A Mathematical Model for the Removal of Organic Mater in Stabilization Ponds BABT
Medri,Waldir; Medri,Vandir.
This work presents an application to systemize the construction of ponds systems for treatment of domestic sewage. It consisted of two anaerobic ponds operated in parallel during May/97 to April/99. These were connected in series with a chicaned facultative pond. The treatment system was controlled with samples collected from the crude sewage (compound sample), in the affluents and effluents of the ponds and along the flux of the anaerobic and facultative ponds. The following parameters were analyzed: pH, Biochemical Oxygen Demand, Chemical Oxygen Demand, Total Solids, Sedimentable Solids, Total Coliforms, Oxygen Consumed in Acid Medium (OCAM) and temperature.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Stabilization ponds; Mathematical model; Optimization.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100014
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