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| Registros recuperados: 122 | |
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| Ramlov,Fernanda; Carvalho,Tiago Jose Griebeler; Costa,Giulia Burle; Rodrigues,Eva Regina de Oliveira; Bauer,Claudia Marlene; Schmidt,Eder Carlos; Kreusch,Marianne Gabi; Moresco,Rodolfo; Navarro,Bruno Bachiega; Cabral,Debora Queiroz; Bouzon,Zenilda Laurita; Horta,Paulo Antunes; Maraschin,Marcelo. |
| ABSTRACT Presence of toxic compounds in marine coastal waters has increased exponentially since Industrial Revolution. In this way, we aimed to evaluate biochemical and physiological changes occurring within Hypnea musciformis after short-term exposure to gasoline. Hypnea musciformis was cultivated without gasoline and then exposed to various concentrations of it (0.001 % - 1.0 %, v/v) for periods of 30 min, 1 h, 12 h and 24 h. A Pricncipal Compound Analysis of UV-vis spectral window (200-700 nm) was able to discriminate gasoline-exposed samples according to both exposure time and gasoline concentration. Changes in carotenoid profile composition were observed. Decreased carotenoid content was associated to gasoline exposure time, being lutein and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochemical stress; Cellular organization; Gasoline pollution; Hypnea musciformis; Physiology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100116 |
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| Pereira,Débora Tomazi; Simioni,Carmen; Filipin,Elisa Poltronieri; Bouvie,Fernanda; Ramlov,Fernanda; Maraschin,Marcelo; Bouzon,Zenilda Laurita; Schmidt,Éder Carlos. |
| ABSTRACT Salinity is an important abiotic factor since it is responsible for the local and/or regional distribution of algae. In coastal regions, salinity changes with prevailing winds, precipitation and tide, and particularly in extreme intertidal conditions. Acanthophora spicifera is a red seaweed that occurs in the supratidal region in which changes in abiotic conditions occur frequently. This study evaluated the effects of salinity on the metabolism and morphology of A. spicifera. Algae were acclimatized under culture conditions with sterilized seawater for seven days. Experiments used different salinities (15 to 50 psu) for seven days, followed by metabolic analyses. This study demonstrates that extreme salinities affect physiological parameters of A.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acanthophora spicifera; Microscopy; Morphology; Physiology; Salinity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400555 |
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| Stech, Marcia Regina; Carneiro, Dalton José. |
| Changes in development and in physiological parameters of fingerlings of the pacu (Piaractus mesopotamicus) fed on diets with high levels of integral crude, extruded, toasted soybean and soybean meal were assessed. The products were evaluated in practical diets for pacu, initially weighing 70 ± 2.19 g, during 82 days. Nine treatments were studied in a 2 × 4 + 1 factorial scheme which corresponded to two fish meal protein replacement levels (50 and 100%) and four soybean products, plus control (100% of fish meal - FM). Development, organosomatic indexes and physiological parameters were evaluated. No differences were reported with regard to weight gain, food intake, food conversion, protein efficiency ratio and specific growth rate. A significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.03.02-8 antinutritional factors; Body composition; Physiology. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24296 |
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| Neves, Maria Luciana Menezes Wanderley; Universidade Federal Rural de Pernambuco; Azevedo, Marcílio de; Universidade Federal Rural de Pernambuco; Costa, Lígia Alexandrina Barros da; Universidade Federal Rural de Pernambuco; Guim, Adriana; Universidade Federal Rural de Pernambuco; Leite, Amanda Menino; Universidade Federal Rural de Pernambuco; Chagas, Juana Cariri; Universidade Federal Rural de Pernambuco. |
| O objetivo deste trabalho foi estimar os valores críticos do Índice de Conforto Térmico (ICT) para ovinos deslanados da raça Santa Inês em condições de pastejo, com base nos parâmetros fisiológicos. O experimento foi conduzido de janeiro a abril na região agreste do Estado de Pernambuco. Os parâmetros temperatura retal (TR) e frequência respiratória (FR) foram avaliados três vezes por semana nos períodos da manhã e da tarde. O ambiente foi monitorado diariamente, por intermédio de uma estação meteorológica instalada ao lado do piquete experimental. As medidas para as análises de regressão foram obtidas de 15 ovinos da raça Santa Inês, sendo cinco de cada cor: branca, castanha e preta. Baseando-se na TR, os valores críticos do ICT estimados para os ovinos... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.04.05.00-4 cor do pelame; Fisiologia; Termorregulação Produção Animal coat color; Physiology; Thermoregulation. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3766 |
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| Fonseca, Gustavo Graciano; Silva, Alisson Alves da. |
| The ability of microalgae to grow heterotrophically lies in the ability to oxidize organic compounds present in the external environment. The aim of this work was to evaluate the growth of Chlorella vulgaris under heterotrophic culture conditions using Basal Bold and NPK media supplemented with different sole carbon sources (glucose, fructose, sucrose, glycerol or acetate). The kinetic parameters obtained were maximum specific growth rate (µmax), doubling time (DT), maximal absorbance, which was also converted to cell concentration values using a linear relation, and cell productivity (PX). Among all the treatments analyzed, the highest maximum specific growth rate found was 0.030 hour-1 (0.72 day-1) in the treatment using Basal Bold medium supplemented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.12.00.00-9; 2.12.01.00-5 microalga; Physiology; Kinetic parameters; Growth rate. Biotecnologia. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/39401 |
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| Abessa,Denis Moledo de Souza; Zaroni,Letícia Pires; Sousa,Eduinetty Ceci Pereira Moreira de; Gasparro,Marcia Regina; Pereira,Camilo Dias Seabra; Rachid,Bauer Rodarte de Figueredo; Depledge,Michael; King,Rebecca Susan. |
| The physiological conditions of mussels from Ubatuba and Santos and also of organisms transplanted from Ubatuba to Santos were studied by using different techniques. Assays for lysosomal stability were conducted on the haemolymph. Heart rate activity was monitored for 6h. The embryonic development of larvae obtained from the collected mussels was analysed. For all the compared groups of mussels, no significant differences were observed for the cardiac activity monitoring and the embryonic bioassays. The mean Neutral Red (NR) retention time was similar for the animals from Santos and Ubatuba, whereas the organisms transplanted to Santos showed a reduction in the retention time of the dye, indicating damage in the lysosomal membranes. These differences were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Perna perna; Neutral red retention assay; Capmon system; Embryonic assay; Biomarkers; Physiology. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200008 |
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| Morais,Heverly; Medri,Moacyr Eurípedes; Marur,Celso Jamil; Caramori,Paulo Henrique; Ribeiro,Ana Maria de Arruda; Gomes,José Carlos. |
| Modifications on leaf anatomy in Coffea arabica shaded with pigeonpea (Cajanus cajan), compared to cultivation under full sun, were assessed. The leaves fully exposed to sunlight presented thicker cuticles and cellular walls, narrower epidermis cells, palisade parenchyma with longer cells, thicker lacunar parenchyma, fewer intercellular spaces and a larger stomata number. Leaves under dense shade presented a narrower cuticle and cellular wall; a mesophyll with smaller volume, but with larger intercellular spaces; and epidermis with thicker cells and a smaller stomata amount, surrounded by subsidiary cells of smaller dimensions. Plants grown under full sunlight presented higher values of net photosynthesis. The results evidenced that the species C. arabica... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffee; Shading; Morphology; Physiology; Agroforestry. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000600005 |
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| Gilmore,D.P.; Da-Costa,C.P.; Duarte,D.P.F.. |
| Physiological and pharmacological research undertaken on sloths during the past 30 years is comprehensively reviewed. This includes the numerous studies carried out upon the respiratory and cardiovascular systems, anesthesia, blood chemistry, neuromuscular responses, the brain and spinal cord, vision, sleeping and waking, water balance and kidney function and reproduction. Similarities and differences between the physiology of sloths and that of other mammals are discussed in detail. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Xenarthra; Sloths; Bradypus; Choloepus; Physiology. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000200001 |
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| Alves,D.L.; Cruz,R.; Lima-Silva,A.E.; Domingos,P.R.; Bertuzzi,R.; Osiecki,R.; De-Oliveira,F.R.; Lima,J.R.P.. |
| The objective of this study was to verify the agreement between pre-programmed and executed pacing during race walking and whether level of the athletes experience and performance influenced this relationship. Twenty-nine national and international race walkers participated in this study (14 males, 24.0±7.1 years old, and 15 females, 23.3±7.3 years old). Pre-programmed pacing for 10- and 20-km official walking races was self-selected via demonstrative pacing charts prior to races, while executed pacing was analyzed by a specialist investigator via an individual plot of current velocity versus distance. There was no agreement between pre-programmed and executed pacing (P=0.674). There was no association between the ability to match the pre-programmed pace... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aerobic evaluation; Performance; Sport; Elite athlete; Physiology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000600608 |
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| Luque,A.; Shimizu,M.H.M.; Andrade,L.; Sanches,T.R.; Seguro,A.C.. |
| Mechanical ventilation has been associated with organ failure in patients with acute respiratory distress syndrome. The present study examines the effects of tidal volume (V T) on renal function using two V T values (8 and 27 mL/kg) in anesthetized, paralyzed and mechanically ventilated male Wistar rats. Animals were randomized into two groups of 6 rats each: V T8 (V T, 8 mL/kg; 61.50 ± 0.92 breaths/min; positive end-expiratory pressure, 3.0 cmH2O; peak airway pressure (PAW), 11.8 ± 2.0 cmH2O), and V T27 (V T, 27 mL/kg; 33.60 ± 1.56 breaths/min; positive end-expiratory pressure, none, and PAW, 22.7 ± 4.0 cmH2O). Throughout the experiment, mean PAW remained comparable between the two groups (6.33 ± 0.21 vs 6.50 ± 0.22 cmH2O). For rats in the V T27 group,... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Artificial respiration; Kidney; Physiology; Glomerular filtration rate; Wistar rats. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001100017 |
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| Rodrigo,V.H.L.. |
| High land productivity is a must for any commercial cultivation including Hevea brasiliensis (rubber). Also, the high demand for natural rubber has placed great pressure on expanding rubber cultivation to new and non-traditional areas. Understanding the ecophysiological principles behind the measures of productivity improvements is vital for wide application of these measures and to assess their sustainability. This review discusses the ecophysiological principles and tools used, along with the measures taken, to address productivity needs in terms of: genotype selection, determination of optimum planting density, and establishment of intercropping systems. Breeding for high yields and selection of suitable genotypes for different growing conditions are a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rubber; Genotype selection; Intercropping; Planting density; Physiology. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400002 |
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| Balbontín,Cristián; Ayala,Héctor; M. Bastías,Richard; Tapia,Gerardo; Ellena,Miguel; Torres,Carolina; Yuri,José Antonio; Quero-García,José; Ríos,Juan Carlos; Silva,Herman. |
| Rain-induced cracking in fruits of sweet cherry (Prunus avium L.) is a problem in most producing areas of the world and causes significant economic losses. Different orchard management practices have been employed to reduce the severity of this problem, although a complete solution is not yet available. Fruit cracking is a complex phenomenon and there are many factors that seem to be involved in its development. During the last decade, genomic and biochemical approaches have provided new insights on the different mechanisms that could be involved in the differential susceptibility shown by commercial cultivars. For instance, sweet cherry genome and transcriptome sequencing information have provided new opportunities to study the expression and structure of... |
| Tipo: Journal article |
Palavras-chave: Physiology; Functional genomics; RNA seq. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000100010 |
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| Raai,Murthazar Naim; Zain,Nurul Amalina Mohd; Osman,Normaniza; Rejab,Nur Ardiyana; Sahruzaini,Nurul Amylia; Cheng,Acga. |
| ABSTRACT: An experiment was conducted to investigate the effects of different shading regimes [i.e., 60% (heavy), 30% (moderate), and 0% (control)] on 25 traits associated with the morphological features, photosynthetic gas exchange and agronomic characteristics of winged bean (Psophocarpus tetragonolobus), an underutilized protein-rich legume from the tropics. Collectively, 80% of the studied variables displayed significant differences (P<0.05) between at least two shade treatments. Shading generally showed most pronounced effect on the physiological traits of the legume, whereby the stomatal conductance, photosynthetic and transpiration rate differed significantly among plants for all treatments. The non-shaded plants were observed to have superior... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morphology; Physiology; Shading; Winged bean; Yield. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200202 |
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| Registros recuperados: 122 | |
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