Relevant bibliographies by topics / Experimental maturation

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Experimental maturation'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Experimental maturation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Experimental maturation"

1

Landais, P., M. Monthioux, and F. Domine. "Experimental simulation of organic matter thermal maturation." Chemical Geology 70, no. 1-2 (1988): 162. http://dx.doi.org/10.1016/0009-2541(88)90673-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Uusi-Heikkilä, S., A. Kuparinen, C. Wolter, T. Meinelt, A. C. O'Toole, and R. Arlinghaus. "Experimental assessment of the probabilistic maturation reaction norm: condition matters." Proceedings of the Royal Society B: Biological Sciences 278, no. 1706 (2010): 709–17. http://dx.doi.org/10.1098/rspb.2010.1507.

Full text
Abstract:
The probabilistic maturation reaction norm (PMRN) describes an individual's probability of maturing at a given age as a function of size and other relevant phenotypic traits. Population-level shifts in the PMRN are often interpreted to indicate genetic as opposed to phenotypic changes in maturation in fish. Inferences derived from trends in the PMRN have been challenged, warranting an experimental assessment of the method. This was accomplished in a laboratory experiment using zebrafish ( Danio rerio ). Fish were reared under different food levels to induce variation in growth and maturation. Plasticity in maturation was not entirely captured by the demographic age- and length-based PMRN. Adding condition to the PMRN captured a greater amount of environmental variation in maturation probability. Nevertheless, significant differences in the PMRNs among the food levels remained after accounting for the influences of age, size and condition on maturation probability indicating plasticity of the PMRN. This was particularly pronounced between fish held on low food levels as compared with fish experiencing abundant resources, with the latter experiencing higher size-specific maturation probabilities. Our analysis emphasizes the need for incorporating salient physiological traits influencing maturation, such as condition, to make accurate inferences about documented shifts observed in the position of PMRNs on maturation trends in wild fish stocks.
APA, Harvard, Vancouver, ISO, and other styles
3

Oh, Keunhee, Yon Su Kim, and Dong-Sup Lee. "Maturation-Resistant Dendritic Cells Ameliorate Experimental Autoimmune Uveoretinitis." Immune Network 11, no. 6 (2011): 399. http://dx.doi.org/10.4110/in.2011.11.6.399.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Dalla Torre, M., R. Ferreiro Mählmann, and W. G. Ernst. "Experimental study on the pressure dependence of vitrinite maturation." Geochimica et Cosmochimica Acta 61, no. 14 (1997): 2921–28. http://dx.doi.org/10.1016/s0016-7037(97)00104-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Dudek, Stephanie Z., Michael Strobel, and Antoinette D. Thomas. "Chronic Learning Problems and Maturation." Perceptual and Motor Skills 64, no. 2 (1987): 407–29. http://dx.doi.org/10.2466/pms.1987.64.2.407.

Full text
Abstract:
An analysis of test scores of a longitudinal sample of normal children, who placed in the lowest quartile of the class on the California Achievement Test and children in the highest quartile yielded significant differences on three perceptual-motor tests and on Piaget's preoperational and precausal tests at Kindergarten level. Although matched for IQ in Kindergarten, significant IQ differences appeared in Grade 1 and continued to increase over 5 yr., as those on other tests. Cattell's Early School Personality Questionnaire indicated that low achievers were significantly less mature and more tense and anxious than high achievers from Grades 1 through 5. Maturational lag is hypothesized for retardation of learning.
APA, Harvard, Vancouver, ISO, and other styles
6

ZHAO, TAO, JIANFANG HU, LIANG HU, and YANHONG PAN. "EXPERIMENTAL MATURATION OF FEATHERS: IMPLICATIONS FOR INTERPRETATIONS OF FOSSIL FEATHERS." PALAIOS 35, no. 2 (2020): 67–76. http://dx.doi.org/10.2110/palo.2019.064.

Full text
Abstract:
ABSTRACT Exceptionally preserved fossil feathers and feather-like integumentary structures provide valuable insights into the early evolution of feathers and flight, but taphonomic biases often make interpretations at the microstructural and ultrastructural levels ambiguous. Maturation experiments have been demonstrated to be useful for investigating the taphonomic alterations of soft tissues, including feathers, during diagenesis. However, experimentally matured feathers resembling fossil feathers preserving keratinous matrix have not yet been obtained. Here we employ experimental maturation to obtain feathers corresponding to different degradation stages, and compare these matured feathers with untreated feathers and fossil feathers at the macroscopic, microstructural, and ultrastructural levels. Results show that several features of thermally matured feathers are similar to those found in fossil feathers. The fusion of barbules that occurred in thermally matured feathers suggests that such a process could occur during diagenesis, making barbules difficult to identify in fossil feathers. Under the most extreme experimental condition, the keratinous matrix can partially survive when the whole feather is turned into ash-like remains and many melanosomes are exposed. Moreover, our results show that the keratinous matrix immediately surrounding melanosomes appears to be more resistant to degradation than the unpigmented keratinous matrix, supporting the hypothesis that melanin can act as a fixative agent to prevent the degradation of keratin.
APA, Harvard, Vancouver, ISO, and other styles
7

Seewald, Jeffrey S., Lorraine B. Eglinton, and Yea-Ling Ong. "An experimental study of organic-inorganic interactions during vitrinite maturation." Geochimica et Cosmochimica Acta 64, no. 9 (2000): 1577–91. http://dx.doi.org/10.1016/s0016-7037(00)00339-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Schrepper, A., M. Schwarzer, and T. Doenst. "Maturation in Rats Affects Mitochondrial Function: Implications for Experimental Routines." Thoracic and Cardiovascular Surgeon 65, S 01 (2017): S1—S110. http://dx.doi.org/10.1055/s-0037-1598942.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Blachford, Karen G., and William M. Thurlbeck. "Lung growth and maturation in experimental oligohydramnios in the rat." Pediatric Pulmonology 3, no. 5 (1987): 328–33. http://dx.doi.org/10.1002/ppul.1950030509.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Breedveld, Merel C., and Patrick S. Fitze. "Experimental evidence that sperm maturation drives protandry in an ectotherm." Oecologia 182, no. 1 (2016): 129–37. http://dx.doi.org/10.1007/s00442-016-3668-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Experimental maturation"

1

Yang, Qing. "Effect of maturation on nerve excitability in an experimental model of threshold electrotonus." Kyoto University, 2000. http://hdl.handle.net/2433/180851.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Lippow, Shaun Matthew. "Computational analysis, design, and experimental validation of antibody binding affinity improvements beyond in vivo maturation." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38886.

Full text
Abstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2007.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (leaves 98-110).<br>This thesis presents novel methods for the analysis and design of high-affinity protein interactions using a combination of high-resolution structural data and physics-based molecular models. First, computational analysis was used to investigate the molecular basis for the affinity improvement of over 1000-fold of the fluorescein-binding antibody variant 4M5.3, engineered previously from the antibody 4-4-20 using directed evolution. Electrostatic calculations revealed mechanistic hypotheses for the role of four mutations in a portion of the improvement, subsequently validated by separate biochemical experiments. Next, methods were developed to computationally redesign protein interactions in order to rationally improve binding affinity. In the anti-lysozyme model antibody D1.3, modest binding improvements were achieved, with the results indicating potentially increased sucesss using predictions that emphasize electrostatics, as well as the need to address the over-prediction of large amino acids. New methods, taking advantage of the computed electrostatics of binding, yielded robust and significant improvements for both model and therapeutic antibodies.<br>(cont.) The antibody D44.1 was improved 140-fold to 30 pM, and the FDA-approved antibody cetuximab (Erbitux) was improved 10-fold to 52 pM, with an experimental success rate of greater than 60% for single mutations designed to remove undersatisfied polar groups or improve misbalanced electrostatic interactions. Finally, a physics-based improvement to the calculation of the nonpolar component of solvation free energy was implemented and parameterized to address the over-prediction of large amino acids. These results demonstrate novel computational capabilities and indicate their applicability for enhancing and accelerating development of reagents and therapeutics.<br>by Shaun Matthew Lippow.<br>Ph.D.
APA, Harvard, Vancouver, ISO, and other styles
3

Bernal, Ulloa Sandra Milena [Verfasser]. "Experimental studies into the role of cAMP in bovine oocyte maturation and embryo developmental competence / Sandra Milena Bernal Ulloa." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2016. http://d-nb.info/1104288443/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Listopad, Joanna Jadwiga. "HO-1 induction by Co-PPIX suppresses experimental skin inflammation, T cell immunity and dendritic cell maturation and function." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2007. http://dx.doi.org/10.18452/15601.

Full text
Abstract:
Die Hämoxygenase 1 (HO-1) ist ein Stressprotein mit antientzündlichen, immunsupprimierenden und zytoprotektiven Eigenschaften, welche in vielen Tiermodellen nachgewiesen wurden. Die zugrunde liegenden Mechanismen sind wenig bekannt. Diese Arbeit demonstriert erstmalig, dass die physiologische Induktion von HO-1 wichtig für die Limitierung von T-Zell-abhängigen Hautentzündungen ist. So führt der HO-1-Inhibitor, Zinn-Protoporphyrin IX (Sn-PPIX), zu einer verstärkten Hautentzündung im Mausmodell. Die pharmakologische Induktion von HO-1 durch Kobalt-Protoporphyrin IX, Co-PPIX, hemmt dagegen die Entzündung in DNFB- bzw. TMA-induzierten murinen Kontaktallergiemodellen sowohl bei Verabreichung von Co-PPIX während der Sensibilisierung als auch vor der Auslösung. Bemerkenswerterweise hemmt eine Co-PPIX-Behandlung die Antigen-induzierte T-Zellproliferation ex vivo in Milzzellen von behandelten Mäusen und in vitro in humanen mononukleären Zellen des peripheren Blutes. Da eine HO-1-Induktion durch Co-PPIX nur in Monozyten und in aus Monozyten abgeleiteten myloischen Dendritischen Zellen (MDDC), nicht aber in T-Zellen, beobachtet wurde, fokussierten alle weiteren Untersuchungen auf Antigen-präsentierende Zellen. HO-1-Induktion durch Co-PPIX reduziert die Expression von MHC-Klasse II und akzessorischen Molekülen und steigert die Phagozytose und den oxidativen Burst von Monozyten. Die immunphänotypische Differenzierung und Maturierung von MDDC wird gehemmt. Funktionsteste zeigen eine Reduktion der Expression und Sekretion von proinflammatorischen und immunstimulatorischen Zytokinen, während die Sekretion des antientzündlichen Zytokins IL-10 gesteigert ist. Die Fähigkeit der MDDC zur Antigenpräsentation gegenüber T-Helferzellen ist für Allo- und Recallantigene stark herabgesetzt. Mittels adenoviraler HO-1-Transduktion von MDDC konnte die Spezifität der Effekte bestätigt werden. Diese Daten zeigen, dass eine verstärkte HO-1-Aktivität die Dendritischen Zellen zu einem unreifen und immunkompromittierten Phänotyp verändert und weisen darauf hin, dass die HO-1-Induktion einen wichtigen Ansatz für die Hemmung der zellulären Immunität und für die Behandlung von T-Zell-abhängigen Hautentzündungen darstellt.<br>Heme oxygenase 1 (HO-1) is an antiinflammatory stress protein. Its immunosuppressive and cytoprotective activities have been demonstrated in several animal models. The underlying mechanisms, however, are poorly understood. This study demonstrates for the first time that the physiological induction of HO-1 is important for the limitation and resolution of T cell-dependent skin inflammation. So, the HO-1 inhibitor, tin protoporphyrin IX (Sn-PPIX), augments cutaneous inflammation in mouse model. Moreover, pharmacologic HO-1 induction by the potent HO-1 inducer, cobaltic protoporphyrin IX (Co-PPIX), inhibits inflammation when applied around sensitization or before challenge in murine DNFB- and TMA-induced contact hypersensitivity models. Remarkably, Co-PPIX treatment inhibits antigen-driven T cell proliferation both ex vivo in murine splenocytes and in vitro in human peripheral blood mononuclear cells. Since induction of HO-1 mRNA and protein was found in monocytes and monocyte-derived myeloid dendritic cells (MDDC) but not T cells, further investigations focused on antigen-presenting cells. HO-1 induction by Co-PPIX depresses monocytic MHC class II and accessory molecule expression whereas phagocytosis and respiratory burst activities are augmented. Moreover, HO-1 induction inhibits the immunophenotypic differentiation and maturation of MDDC. Functional analysis revealed a decreased proinflammatory cytokine production whereas secretion of the antiinflammatory cytokine IL-10 is increased. Remarkably, the antigen-presenting capacity of MDDC for T-helper cells is diminished both for allo- and for recall-antigens. Adenoviral HO-1 transduction of MDDC confirmed that the effects are mediated by HO-1. These data indicate that an enhanced HO-1 activity switches myeloid DCs to an immature and functionally compromised phenotype and suggest that HO-1 induction represents an important approach for depressing T cell immunity and for the treatment of T cell-dependent skin inflammation.
APA, Harvard, Vancouver, ISO, and other styles
5

FARIAS, Emanuel Tarcisio do Rêgo. "Compostos bioativos e capacidade antioxidante em frutos de araçá, noni e romã." Universidade Federal de Campina Grande, 2014. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/835.

Full text
Abstract:
Submitted by Deyse Queiroz (deysequeirozz@hotmail.com) on 2018-05-29T12:38:02Z No. of bitstreams: 1 EMANUEL TARCISIO DO RÊGO FARIAS - DISSERTAÇÃO PPGSA PROFISSIONAL 2014..pdf: 1539206 bytes, checksum: eeac3c1656f48100210a881ec09ef1c6 (MD5)<br>Made available in DSpace on 2018-05-29T12:38:02Z (GMT). No. of bitstreams: 1 EMANUEL TARCISIO DO RÊGO FARIAS - DISSERTAÇÃO PPGSA PROFISSIONAL 2014..pdf: 1539206 bytes, checksum: eeac3c1656f48100210a881ec09ef1c6 (MD5) Previous issue date: 2014<br>O consumo de frutas in natura é crescente em todo o mundo devido a fatores que levam a modificações nos hábitos alimentares das pessoas, como o cuidado com a saúde e os aspectos nutritivos dos alimentos. O presente trabalho teve como objetivo avaliar a qualidade, quantificar os compostos bioativos e a capacidade antioxidante dos frutos: araçá, noni e romã. O trabalho foi desenvolvido no Laboratório de Tecnologia de Produtos de Origem Vegetal do CCTA/UFCG, no Campus de Pombal - PB. Frutos do araçazeiro, do noni e da romãzeira foram provenientes de plantios localizados em cidades distintas (Areia-PB, Fortaleza-CE e Sousa-PB, respectivamente). Os frutos foram colhidos diretamente na copa da planta, tomando-se como índice de colheita a coloração do fruto. Foram avaliados quatro e cinco estádios de maturação para os frutos de araçá e noni, respectivamente. Foram realizadas avaliações físicas, físico-químicas, compostos bioativos e capacidade antioxidante nos frutos. O delineamento experimental utilizado foi o inteiramente casualizado. Os resultados foram submetidos à análise de variância, detectando efeito significativo para o teste F, às médias foram comparadas pelo teste de Tukey ao nível de 5% de probabilidade. As características físico-químicas de sólidos solúveis, açúcares solúveis totais, açúcares redutores e relação SS/AT, aumentaram com o avanço da maturação para os três frutos estudados. Para os compostos bioativos: o teor de ácido ascórbico dos frutos de noni apresentou um aumento considerável com o avanço da maturação; o teor de antocianinas da romã aumentou com a maturação, assim como os compostos fenólicos do araçá apresentou valores máximos para o estádio I e teve uma redução de mais de 50% no estádio IV, os frutos de noni e romã também apresentaram valores representativos para os compostos fenólicos. Os frutos estudados apresentaram propriedade antioxidante, entretanto a ação foi diferenciada entre eles, o araçá apresentou a maior capacidade de reduzir o radical DPPH e teve sua capacidade reduzida com o avanço da maturação, o noni apresentou efeito contrário aumentando o poder redutor com o desenvolvimento dos frutos e a romã não apresentou variação entre os estádios de maturação. Concluindo que os frutos avaliados apresentaram quantidades consideráveis de compostos biologicamente ativos, podendo constituir como uma boa fonte de antioxidantes naturais para a dieta humana.<br>The consumption of fresh fruits is increasing worldwide due to factors that lead to changes in eating habits of people, such as health care and nutritional aspects of food. This study aimed to evaluate the quality, quantify the bioactive compounds and the antioxidant capacity of fruits: guava, noni and pomegranate. The work was developed in the Laboratory of Technology of Plant Products of CCTA / UFCG, Campus de Pombal - PB. Fruits of strawberry guava, noni and pomegranate were from plantations located in different cities (Areia-PB, Fortaleza-CE and Sousa-PB, respectively). The fruits were harvested directly in the crown of the plant, taking as harvest index coloring of the fruit. Four five maturity stages were evaluated for the fruits of guava and noni, respectively. Physical assessments, physicochemical, bioactive compounds and antioxidant capacity in fruits were performed. The experimental design was completely randomized. The results were subjected to analysis of variance, detecting significant for the F test, the average effect were compared by Tukey test at 5% probability. The physico-chemical characteristics of soluble solids, total soluble sugars, reducing sugars and SS / TA ratio increased with advancing maturity for the three studied fruits. For bioactive compounds: the ascorbic acid content of the fruits of noni showed a significant increase with advancing maturity; the anthocyanin content of pomegranate increased with maturation, as well as phenolic compounds of guava showed maximum values for stage I and decreased by more than 50% in stage IV, the fruits of noni and pomegranate also had representative values for phenolic compounds. The fruits studied exhibited antioxidant property however the action was different between them, guava showed the greatest ability to reduce DPPH radical and had reduced capacity with advancing maturity, noni showed opposite effect by increasing the reducing power with the development of pomegranate fruit and did not vary between the maturity stages. Concluding that the fruits evaluated showers considerables amounts of biologically active compounds may be a good source of natural antioxidants for the human diet.
APA, Harvard, Vancouver, ISO, and other styles
6

Elie, Marcel. "Effets des conditions temps-température et de la matrice minérale sur l'évolution de matières organiques de type II et III au cours de la pyrolyse en milieu confiné." Nancy 1, 1994. http://www.theses.fr/1994NAN10315.

Full text
Abstract:
Une roche mère du toarcien du bassin de paris (broyée, sèche, humide), son kérogène isole et un charbon de la Mahakam ont été matur2s artificiellement en milieu confiné afin d'étudier les effets de la présence de matrice minérale, de la présence d'eau et du couple temps-température lors de la maturation thermique de la matière organique. 224 pyrolyses ont été réalisées sur ces différents précurseurs dans des conditions temps-température variables: 5 heures < t < 100 jours ; 203c < t < 508c. Les résultats obtenus indiquent que: la plupart des paramètres géochimiques sont décalés entre le kérogène et la roche mère en raison des propriétés de rétention des minéraux argileux ; l'influence catalytique des minéraux argileux est plus faible pour une roche mère que pour un mélange artificielle (kérogène + minéraux argileux) ; la présence d'eau (12%) induit un enrichissement du bitume résiduel en hydrocarbures ; l'eau intervient directement dans les processus de transfert d'hydrogène lors de la dégradation de la matière organique en milieu confiné ; le temps et la température ne sont pas des paramètres interchangeables. En effet, la dégradation des composes polaires s'intensifie avec la durée de pyrolyse alors que la dégradation des hydrocarbures est plus sensible à l'utilisation de températures élevées. Ces résultats montrent la nécessité de prendre en compte les différents facteurs (présence de matrice minérale, rôle de l'eau, effets combinés du temps et de la température) dés lors qu'il s'agit d'extrapoler
APA, Harvard, Vancouver, ISO, and other styles
7

FOTUNATO, Tádria Cristiane de Sousa. "Propriedades físicas, químicas e capacidade antioxidante da romã (cv.molar) durante o desenvolvimento do fruto." Universidade Federal de Campina Grande, 2016. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/744.

Full text
Abstract:
Submitted by Deyse Queiroz (deysequeirozz@hotmail.com) on 2018-05-18T19:03:54Z No. of bitstreams: 1 TADRIA CRISTIANE - DISSERTAÇÃO PPGHT 2016.pdf: 1674149 bytes, checksum: 0fdd10430fee76dc5ec09dd880c9bbda (MD5)<br>Made available in DSpace on 2018-05-18T19:03:54Z (GMT). No. of bitstreams: 1 TADRIA CRISTIANE - DISSERTAÇÃO PPGHT 2016.pdf: 1674149 bytes, checksum: 0fdd10430fee76dc5ec09dd880c9bbda (MD5) Previous issue date: 2016-05-25<br>A caracterização das transformações que ocorrem durante o desenvolvimento do fruto possibilita identificar o período em que os frutos reúnem o maior número de características que expressam a qualidade do fruto para a comercialização in natura ou industrial. Assim o objetivo deste estudo foi quantificar as mudanças nas características físicas, físico-químicas e atividade antioxidante do suco e rendimento de óleo e amido da semente da romã cv.‗Molar‘, durante o desenvolvimento do fruto. O delineamento experimental foi o inteiramente casualizado, cujos tratamentos foram constituídos pela idade dos frutos (10, 20, 30, 40, 50, 60, 70, 80, 90 e 100 dias após a antese), com quatro repetições constituídas por cinco frutos por parcela totalizando 20 frutos por tratamento. Após a colheita os frutos foram transportados para o Laboratório de Análises de Alimentos da Universidade Federal de Campina Grande (UFCG), Campus de Pombal-PB, onde foram realizadas as análises físicas, físico-químicas, atividades antioxidantes do suco. A análise de rendimento de óleo e amido das sementes foi realizada pelo Laboratório Instituto Tamanduá, Patos-PB. Ao longo do desenvolvimento ocorreram alterações nas características físicas, físico-química, atividade antioxidante e de rendimento do óleo e amido da semente. Romãs cv. ‗Molar‘ tiveram uma massa de 200 g, formato oblíquo, no que diz respeito a variável volume do fruto constatouse aumento até os 100 dias de idade. Os frutos apresentaram alteração na coloração da casca a partir dos 50 dias sendo que aos 90 dias os frutos apresentaram coloração amarelo-alaranjado. No suco houve evolução da cor para um rosa avermelhado com redução da intensidade com o avanço da idade. Para as análises químicas constatou-se redução da acidez titulável (AT) a partir dos 80 dias enquanto que no mesmo período houve aumento no teor de SS, SS/AT, açúcares totais e redutores e vitamina C com o desenvolvimento do fruto. No que diz respeito aos pigmentos, fenólicos, antocianinas e carotenoides, verificou-se que com o aumento da idade dos frutos, a concentração de fenólicos diminui linearmente, enquanto que a concentração de antocianinas ocorreu um aumento polinomial atingido concentração máxima aos 90 dias apresentando-se uma coloração avermelhada, ao mesmo tempo os carotenoides apresentaram a menor concentração aos 90 dias de idade com valor de 0,18 µL/100 mL-1 . O tratamento de 90 dias foi o que apresentou a maior capacidade antioxidante com valores de 3501,00 g.polpa.100 mL de DPPH e 10546,52 uM Trolox/g polpa para os métodos DPPH e ABTS respectivamente, revelando alta atividade antioxidante dos frutos nesse período. Rendimento do óleo e amido da semente alterou-se significativamente durante o desenvolvimento do fruto da romã. Houve acréscimo de 11,57% no rendimento de óleo dos 60 para os 100 dias após a antese, em contra partida ocorreu um decréscimo no rendimento de amido tendo o menor rendimento nos frutos colhidos aos 100 dias (12,97%). Diante dos resultados obtidos observa-se que os frutos colhidos aos 90 dias reuniram o maior número de características de qualidade, que juntas possibilitaram identificar a idade na qual os frutos encontram-se aptos a serem colhidos, nas condições de cultivo das Várzeas de Sousa, PB.<br>The characterization of the transformations that take place during the fruit development of the result makes possible to identify the period in which the results join the biggest number of characteristics that express the quality of the result for the marketing in natura or industrial. So the objective of this study quantified the changes in the physical characteristics, chemicalphysically and antioxidant activity of the juice and profit of oil and starch of the seed of the pomegranate hp.'Molar‘, during the development of the result. The experimental delineation was it completely casualizado, whose treatments were constituted by the age of the results (10, 20, 30, 40, 50, 60, 70, 80, 90 and 100 days after the antese), with four repetitions constituted by five results by piece totalizing 20 results for treatment. After the harvest the results were transported for the Laboratory of Analyses of Foods of the Federal University of Big Prairie (UFCG), Campus Of - PB, where the physical analyses were carried out, chemical-physically, antioxidant activities of the juice. The analysis of profit of oil and starch of the seeds was carried out by the Laboratory Institute Anteater, - PB. Along the development alterations took place in the physical characteristics, chemical-physically, antioxidant activity and of profit of the oil and starch of the seed. Pomegranates hp. ‗Molar‗ they had a mass of 200 g, oblique format, what concerns variable volume of the result increase was noted up to 100 days of age. The results presented alteration in the coloration of the bark from 50 days being that to 90 days the results presented coloration orangey-yellow. In the juice there was evolution of the color for a rose reddened with reduction of the intensity with the advancement of the age. For the chemical analyses (AT) noted reduction of the acidity titulável from 80 days whereas in the same period there was increase in the tenor of SS, SS/AT, total and reducing sugars and vitamin C with the development of the result. What concerns the pigments, fenólicos, antocianinas and carotenoides, happened what with the increase of the age of the results, the concentration of fenólicos reduces linearly, whereas the concentration of antocianinas took place an increase polinomial when the very concentration was reached to 90 days when a reddish coloration is showing up, at the same time the carotenoides presented the least concentration to 90 days of age with value of 0,18 µL/100 mL-1. The treatment of 90 days was what pulp presented the biggest antioxidant capacity with values of 3501,00 g.polpa.100 mL of DPPH and 10546,52 a Trolox/g for the methods DPPH and ABTS respectively, revealing high antioxidant activity of the results in this period. Profit of the oil and starch of the seed was altered significantly during the development of the result of the pomegranate. There was addition of 11,57 % in the profit of oil of the 60 for 100 days after the antese, in against departure a decrease took place in the starch profit having the least profit in the results gathered to 100 days (12,97 %). Before the obtained results it is noticed that the results gathered to 90 days joined the biggest number of quality characteristics, which boards made possible to identify the age in which the results are suitable to be gathered, in the conditions of cultivation of the Meadows of Sousa, PB.
APA, Harvard, Vancouver, ISO, and other styles
8

Izquierdo-Useros, Nuria. "Maturation of Dendritic Cells & HIV Transmission to CD4(+) T cells." Doctoral thesis, Universitat Autònoma de Barcelona, 2009. http://hdl.handle.net/10803/3822.

Full text
Abstract:
Las células dendríticas (DCs) están especializadas en la presentación de antígeno. Sin embargo, las DCs expuestas al virus de la inmunodeficiencia humana (VIH) también son capaces de transmitir una potente infección citopática a los linfocitos T CD4+, un proceso que frecuentemente se ha relacionado con la capacidad que tiene el receptor DC-SIGN (Dendritic Cell-Specific Intercellular adhesion molecule-3-Grabbing Non-integrin) para unirse de forma específica a la glicoproteína de la envuelta viral. <br/>La maduración de las DCs puede aumentar la eficiencia de transmisión del VIH a los linfocitos T CD4+ a través de la trans-infección. Nuestro objetivo en este trabajo ha sido comparar el efecto de la maduración en las células dendríticas derivadas de monocitos (MDDCs) y en las células dendríticas mieloides derivadas de sangre durante el proceso de captura del VIH. Para analizar la captura y transmisión viral a las células diana competentes in vitro de un VIH pseudotipado con envuelta y el virus homólogo replicativo utilizamos las técnicas de detección de p24gag, actividad luciferasa y microscopía electrónica y confocal. Así, observamos que la maduración de las MDDCs o las DCs mieloides aumenta la captura activa del VIH de una forma independiente del receptor DC-SIGN o de la glicoproteína de la envuelta viral, incrementándose también el tiempo de retención del virus capturado. Además, verificamos que la mayor transmisión viral de las DCs maduras (mDCs) a los linfocitos T CD4+ es altamente dependiente de una captura viral activa, un proceso endocítico mediado a través de dominios de membrana enriquecidos en colesterol. Notablemente, mientras que las mDCs concentran el virus capturado en una única vesícula positiva para las tetraspaninas CD63 y CD81, las DCs inmaduras carecen de dichas estructuras, lo que sugiere un proceso de tráfico intracelular viral diferencial en cada tipo celular.<br/>Los exosomas son vesículas celulares secretadas que pueden ser internalizadas por las DCs, contribuyendo a la activación específica de antígeno de los linfocitos naive T CD4+. En esta tesis demostramos que el VIH puede explotar esta ruta intrínseca a las mDCs que permite la diseminación de antígenos a través de los exosomas, permitiendo así la trans-infección de los linfocitos T CD4+. Tras la maduración de las DCs, la captura del VIH-1, las partículas pseudovirales VIH-1 Gag-eGFP (VLPs) y los exosomas aumenta significativamente, acumulándose dentro de un compartimento CD81+. La captura de estas partículas se inhibió preincubando las mDCs con las VLPs o los exosomas, lo que sugiere que la expresión de determinantes moleculares comunes en la superficie de las VLPs y los exosomas es necesaria para la internalización mediada por las mDCs. Así mismo, la captura mediada por las mDCs es insensible a un tratamiento proteolítico, pero puede bloquearse cuando los virus, las VLPs o los exosomas se producen en células tratadas con inhibidores de la biosíntesis de los esfingolípidos, que alteran la composición lipídica de las partículas que emergen.<br/>Por último, las VLPs y los exosomas capturados por las mDCs se transmiten a los linfocitos T CD4+ de una forma independiente de la glicoproteína de la envuelta viral, resaltando la existencia de una nueva ruta de diseminación viral.<br/>En general, estas observaciones ayudan a explicar la mayor capacidad de las mDCs para transmitir el VIH a los linfocitos T CD4+, un proceso que potencialmente puede contribuir a la diseminación viral en los nódulos linfáticos in vivo, donde la replicación viral tiene lugar de forma mayoritaria y hay una interacción continua entre las células T CD4+ susceptibles y las mDCs.<br>Dendritic cells (DCs) are specialized antigen-presenting cells. However, DCs exposed to human immunodeficiency virus (HIV) are also able to transmit a vigorous cytopathic infection to CD4+ T lymphocytes, a process that has been frequently related to the ability of DC-SIGN (Dendritic Cell-Specific Intercellular adhesion molecule-3-Grabbing Non-integrin) to bind HIV-1 envelope glycoproteins. Maturation of DCs can increase the efficiency of HIV transmission through trans-infection. We aimed to comparatively study the effect of maturation in monocyte derived dendritic cells (MDDCs) and blood-derived myeloid DCs during HIV capture process. In vitro capture and transmission of envelope pseudotyped HIV-1 and its homologous replication competent virus to susceptible target cells was assessed by p24gag detection, luciferase activity, and both confocal and electron microscopy. Maturation of MDDCs or myeloid DCs enhanced active capture of HIV in a DC-SIGN and viral envelope glycoprotein independent manner, increasing the lifespan of trapped virus. Moreover, higher viral transmission of mature DCs (mDCs) to CD4+ T lymphocytes was highly dependent on active viral capture, a process mediated through cholesterol-enriched domains. Mature DCs concentrated captured virus in a single large vesicle staining for CD81 and CD63 tetraspanins, while immature DCs lacked these structures, suggesting different intracellular trafficking processes. <br/>Exosomes are secreted cellular vesicles that can be internalized by DCs contributing to antigen specific naive CD4+ T lymphocyte activation. Here, we demonstrate that HIV can exploit this exosome antigen-dissemination pathway intrinsic to mDCs for mediating trans-infection of CD4+ T lymphocytes. Capture of HIV-1, HIV-1 Gag-eGFP viral like particles (VLPs) and exosomes by DCs was upregulated upon maturation, resulting in localization within a CD81+ compartment. Uptake of VLPs or exosomes could be inhibited by a challenge with either particle, suggesting that the expression of common determinant(s) on VLP or exosome surface is necessary for internalization by mDCs. Capture by mDCs was insensitive to proteolysis, but blocked when virus, VLPs, or exosomes were produced from cells treated with sphingolipid biosynthesis inhibitors that modulate the lipid composition of the budding particles. Finally, VLPs and exosomes captured by mDCs were transmitted to CD4+ T lymphocytes in an envelope glycoprotein-independent manner, underscoring a new potential viral dissemination pathway.<br/>Overall, these observations help explaining the greater ability of mDCs transferring HIV to CD4+ T lymphocytes, a process that can potentially contribute to the viral dissemination at lymph nodes in vivo, where viral replication takes place and there is a continuous interaction between susceptible T-cells and mDCs.
APA, Harvard, Vancouver, ISO, and other styles
9

Ladame, Dominique. "La maturation du spermatozoide : role du plasma seminal face a l'infection : a propos d'une etude statistique retrospective et d'une etude experimentale." Université Louis Pasteur (Strasbourg) (1971-2008), 1992. http://www.theses.fr/1992STR1M023.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Koueta, Noussithe. "Etude experimentale du controle endocrine de la maturation genitale chez la seiche sepia officinalis l. (mollusque cephalopode)." Caen, 1990. http://www.theses.fr/1990CAEN2039.

Full text
Abstract:
L'etude de la maturation genitale des seiches de la baie de seine a ete realisee grace a des methodes biometriques, cytologiques, d'histologie quantitative et biochimiques. Les resultats obtenus sur l'aspect qualitatif et quantitatif des cellules germinales et des cellules folliculaires grace a ces methodes sont complementaires et permettent de preciser les periodes des differentes phases de la spermatogenese et de l'ovogenese chez les seiches des cotes normandes. Au cours de la seconde annee de vie, les multiplications intenses de cellules germinales males ont lieu en aout et debut septembre et la suite de la maturation est dominee par la spermiogenese jusqu'a la reproduction en mai-juin. Dans l'ovaire, la multiplication des cellules folliculaires (previtellogenese) s'effectue en octobre et novembre, alors que la synthese du vitellus (vitellogenese) commence en decembre et se poursuit jusqu'a la reproduction (mai-juin). L'activite atcase des gonades s'est averee correlee aux divisions intenses des cellules germinales (spermatogonies et spermatocytes) et des cellules folliculaires au cours du cycle sexuel. Ces resultats prouvent que l'atcase peut etre utilisee comme indice de l'activite chez la seiche. La mise au point de deux bioessais rapides, precis, quantifiables et complementaires (activites atcase et incorporation de thymidine tritiee) en utilisant des dissociations de cellules germinales, de cellules folliculaires et de cellules des glandes annexes femelles pendant les periodes de la gametogenese intense nous a permis de montrer l'action du facteur mitogene de la gonadotropine de la glande optique sur ces cellules. Il apparait que la glande optique controle la maturation genitale des seiches grace a sa gonadotropine dont une composante est un facteur mitogene non specifique au sexe, present dans l'hemolymphe, de nature peptidique, de poids moleculaire compris entre 4000 et 5000 da
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Experimental maturation"

1

Becker, Misha, and Susannah Kirby. A-Movement in Language Development. Edited by Jeffrey L. Lidz, William Snyder, and Joe Pater. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199601264.013.12.

Full text
Abstract:
This chapter provides an overview of the literature on children’s acquisition of constructions involving A(rgument)-movement: passive, unaccusative verbs, raising-to-subject, and raising-to-object. Considering A-movement within a derivational theoretical framework (GB/Minimalism), we provide some historical and theoretical context for treating these constructions under the same operation. In all cases, the surface position of an NP is incongruous with its syntactic configuration for receiving its thematic role. For each construction we discuss empirical evidence concerning children’s knowledge of the construction (including, where available, cross-linguistic data), and the major theoretical debates that have arisen around them, notably Maturation. We suggest that variability in experimental outcomes, both within and across constructions, can be linked to methodological choices and not likely to lack of linguistic knowledge.
APA, Harvard, Vancouver, ISO, and other styles
2

Lidz, Jeffrey L., William Snyder, and Joe Pater, eds. The Oxford Handbook of Developmental Linguistics. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199601264.001.0001.

Full text
Abstract:
This handbook provides a thorough and systematic investigation of the question of how we come to know a language. Researchers from all over the world explore the leading research questions within developmental linguistics, which include: What does the newborn child bring to the task of language acquisition? What information must the child extract from her linguistic input? And how does biological maturation interact with the child’s developing linguistic abilities? In the main body of the handbook, each chapter addresses a single area of grammatical knowledge, such as syllable structure, negation, or binding theory, and begins with an overview of the fundamental generalizations that guide current linguistic analyses and the features of grammatical representation that these generalizations entail. This is followed by a consideration of language learnability; a review of the relevant acquisition literature organized according to target language, age range of the child, and research methodology; and, finally, a discussion of a series of broader questions, such as: Do the experimental findings that were reviewed in the chapter favour a particular approach to the logical problem of language learnability? In what ways, if any, does the child’s knowledge surpass the information directly available from the input? In what ways can innate structure make the input more informative? Likewise, are there ways in which the child’s knowledge seems more limited than expected, given the richness of the available input?
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Experimental maturation"

1

San Martín, Carmen. "Virus Maturation." In Advances in Experimental Medicine and Biology. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14741-9_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Steinman, Ralph M., Maggie Pack, and Kayo Inaba. "Dendritic Cell Development and Maturation." In Advances in Experimental Medicine and Biology. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-9966-8_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Wang, Ying, Jun Liu, Peter D. Burrows, and Ji-Yang Wang. "B Cell Development and Maturation." In Advances in Experimental Medicine and Biology. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3532-1_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Barber, P. A., B. Bruederlin, and A. M. Buchan. "Experimental Neuroprotection: Translation to Human Stroke Trials." In Maturation Phenomenon in Cerebral Ischemia V. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18713-1_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Garcia, J. H., Z. R. Ye, K. F. Liu, and J. A. Gutierrez. "Delayed Neuronal Death in Experimental Ischemic Stroke." In Maturation Phenomenon in Cerebral Ischemia III. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-58602-6_32.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Steinberg, G. K. "Translating Experimental Stroke Research into the Clinical Arena." In Maturation Phenomenon in Cerebral Ischemia IV. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59446-5_30.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Haas, Arthur L. "Ubiquitin-Mediated Processes in Erythroid Cell Maturation." In Advances in Experimental Medicine and Biology. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-5985-2_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Winzler, Claudia, Patrizia Rovere, Valerie S. Zimmermann, et al. "Checkpoints and Functional Stages in DC Maturation." In Advances in Experimental Medicine and Biology. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-9966-8_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Xu, Jing, Min Xu, Marcelo P. Bernuci, et al. "Primate Follicular Development and Oocyte Maturation In Vitro." In Advances in Experimental Medicine and Biology. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8214-7_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

de Groat, William C., and Isao Araki. "Maturation of Bladder Reflex Pathways During Postnatal Development." In Advances in Experimental Medicine and Biology. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4737-2_19.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Experimental maturation"

1

McNamara, Maria E., and Daniel J. Field. "EXPERIMENTAL MATURATION OF FEATHERS REVEALS BIASES IN THE FEATHER FOSSIL RECORD." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-286808.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Onwumelu, Chioma, and Stephan Nordeng. "EXPERIMENTAL INVESTIGATION OF MATURATION PROCESSES AND ITS RESULTANT IMPACT ON ORGANIC MATTER." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-353815.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Haipeng, Lan, Tang Yurong, Zhang Hong, An Jing, Liu Wenliang, and Li Fengjuan. "An Experimental Study on the Variation of Physical-Chemical Indicators for Korla Fragrant Pear in the Maturation Stage." In 2014 Fifth International Conference on Intelligent Systems Design and Engineering Applications (ISDEA). IEEE, 2014. http://dx.doi.org/10.1109/isdea.2014.13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Doiron, K., P. Sauer, A. Schimmelmann, M. Mastalerz, A. Drobniak, and S. Brassell. "Evidence for the Role of Water in Ch4 Generation from Long-Term, Low Temperature Experimental Maturation of Immature Shales." In 30th International Meeting on Organic Geochemistry (IMOG 2021). European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202134230.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Ghoshal, Anindya, James Ayers, Mark Gurvich, Michael Urban, and Nathaniel Bordick. "Experimental Investigations in Embedded Sensing for Structural Health Monitoring of Composite Components in Aerospace Vehicles." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8151.

Full text
Abstract:
This paper summarizes the experimental investigations for smart embedded sensing in rotorcraft composite components. The overall objective of this effort was to develop smart embedded sensor technologies for condition based maintenance (CBM) for composite components in Army rotorcraft. This paper presents the results of experimental investigations related to development and maturation of different types of embedded sensing solutions for structural health monitoring of composite components including Fiber Bragg Grating (FBG) sensors, phased and discrete piezoelectric sensor arrays. A discussion is provided relative to embedment of optical fibers into composites, and the results from embedded FBG sensors in a rotorcraft flexbeam subcomponent test specimen with seeded delamination subjected to dynamic loading. Likewise, results are analyzed of surface mounted phased array and embedded smart piezoelectric sensors in the flexbeam subcomponent test specimen with embedded delamination, subjected to fatigue cyclic loading. The paper also summarizes the lessons learned from efforts to nucleate and propagate delamination within composite components under dynamic cyclic loading.
APA, Harvard, Vancouver, ISO, and other styles
6

Ghaffari, A., S. Ghanizadeh Chenarbon, and P. Rahmani Vahid. "Mathematical and Optimization for a Non-Linear Yeast Cell Proliferation Problem Using Genetic Algorithm." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68480.

Full text
Abstract:
We consider an age-maturity structured model arising from a yeast cell proliferation problem. This model is a new study in the filed of analysis of cell kinetics and cell division using mathematical modeling and optimized by Genetic Algorithm. We use our mathematical analysis in conjunction with experimental data from the division analysis of primitive cells to characterize the maturation/proliferation process.
APA, Harvard, Vancouver, ISO, and other styles
7

Didenko, P. A. "Effect of new-generation mineral fertilizers on productivity of grapes and quality of wine in the Crimea." In CURRENT STATE, PROBLEMS AND PROSPECTS OF THE DEVELOPMENT OF AGRARIAN SCIENCE. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-2020-5-9-10-15.

Full text
Abstract:
The article presents the results of the experimental study of the effect of new-generation mineral fertilizer “Nutri-Fight” and water conditioner “Spartan” (used as a tank mixture) on productivity of grapes and quality of wine produced from the red wine grape variety ‘Cabernet-Sauvignon’. Experiments were carried out in the soil and climatic conditions of the mountain-valley zone of the Crimean Peninsula. The studied preparations were added to mineral fertilizer and used at such grape berry development stages as “before blooming”, “after blooming”, “pea-sized berry”, “beginning of fruit maturation”. In the course of the research we found that 2.25 l/ha of “Nutri-Fight” and 0.2 l/ha of water conditioner “Spartan” were the optimal rates and had positive effect on the grape yield and wine quality
APA, Harvard, Vancouver, ISO, and other styles
8

Okoye, Kenechukwu M., Ehsan Rajabi-Jaghargh, and Rupak K. Banerjee. "Effect of Anastomotic Angle on Pressure Drop in Arteriovenous Fistulae." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14408.

Full text
Abstract:
The amount of the blood flow rate to an arteriovenous fistula (AVF) is one of the primary factors that determine the likelihood of maturation. The increase in the flow rate is dependent on the amount of the resistive forces in the AVF which can be evaluated by pressure drop (Δ p). Our group has shown that the surgical configuration of AVF affects the hemodynamics and thus the remodeling within the AVF. Here, our aim is to study the effect of AVF configuration on the induced Δ p. Based on the data collected in our previous in-vivo porcine experiments, idealized models of AVFs with anastomosis angles of 30°, 60°, and 90° were created and numerically solved to find Δ p under steady-state conditions. The Δ p from the idealized models were within the same range as the experimental data (15.31 ± 3.78 mmHg). The highest and lowest Δ p were found to be 14.75 and 6.40 mmHg for the 30° and 90° AVFs, respectively. Moreover, an inverse relationship was found between the Dean number ( De) and Δ p. As De decreased with increasing radius of curvature (from higher anastomotic angles to the lower), the Δ p increased. These data suggest that creating the AVFs in a surgical configuration that results in larger De (lower radius of curvature such as 90° AVF) may achieve higher flow rate due to relatively lower Δ p. In contrast, creation of AVF with lower De which represents a sharp bend with high radius of curvature (30° AVF) could be detrimental to AVF maturation as it results in relatively higher Δ p.
APA, Harvard, Vancouver, ISO, and other styles
9

Kirollos, Benjamin, and Thomas Povey. "Laboratory Infra-Red Thermal Assessment of Laser-Sintered High-Pressure Nozzle Guide Vanes to De-Risk Engine Design Programmes." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57382.

Full text
Abstract:
The continuing maturation of metal laser-sintering technology (DMLS) presents the opportunity to de-risk the engine design process by experimentally down-selecting HPNGV cooling designs using laboratory tests of laser-sintered — instead of cast — parts to assess thermal performance. Such tests could be seen as supplementary to thermal-paint-test engines, which are used during certification to validate cooling system designs. In this paper, we compare conventionally cast and laser-sintered titanium alloy parts in back-to-back experimental tests at engine-representative conditions over a range of coolant mass flow rates. Tests were performed in the University of Oxford Annular Sector Heat Transfer Facility. The thermal performance of the cast and laser-sintered parts — measured using new infra-red processing techniques — is shown to be very similar, demonstrating the utility of laser-sintered parts for preliminary engine thermal assessments. We conclude that the methods reported in this paper are sufficiently mature to make assessments which could influence engine development programmes.
APA, Harvard, Vancouver, ISO, and other styles
10

Conners, Briana M., Ehsan Rajabi-Jaghargh, and Rupak K. Banerjee. "Effect of the Anastomotic Angle on the Wall Shear Stress Profiles in the Arteriovenous Fistulae." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14405.

Full text
Abstract:
A significant number of arteriovenous fistulae (AVFs) fail to mature to support hemodialysis. Hemodynamic parameters, mainly wall shear stress (WSS), are believed to play a crucial role in the maturation or failure of AVFs. Our goal is to study the effects of the AVF configuration on the WSS profile. Idealized AVFs with 90°, 60°, and 30° anastomotic angles were created based on our previous experimental data from an in-vivo swine model [1]. The hemodynamic parameters were then obtained using numerical techniques under steady state condition. The average WSS values for our models were within range of the swine model average WSS (= 174.9±64.6 dyne/cm 2). For all AVFs, WSS was higher along the bend. The highest WSS occurred on the outer wall (OW) of the 30° AVF (= 613 dyne/cm 2) compared to the 60° (= 407 dyne/cm 2) and 90° AVFs (= 329 dyne/cm 2). WSS on the inner wall (IW) of the bend was negative with the smallest magnitude in the 90° AVF (= −91 dyne/cm 2) compared to the 60° (= −172 dyne/cm 2) and 30° AVFs (= −169 dyne/cm 2). In addition, the maximum difference in WSS (ΔWSS: measure of axial WSS gradient) was less for the 90° AVF (= 158 dyne/cm 2) than the 60° (= 170 dyne/cm 2) and 30° AVFs (= 414 dyne/cm 2). A similar trend was found on the OW with ΔWSS of 161, 405, and 870 dyne/cm 2 for the 90°, 60°, 30° AVF, respectively. Moreover, AVFs with different angles can be categorized based on Dean number ( De) which showed an inverse correlation to WSS range. Thus, creating an AVF with a surgical configuration that results in a low De, representing a sharp bend with large radius of curvature, could result in a hemodynamic condition (high WSS and ΔWSS) that could have adverse effects on the fistula maturation.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Experimental maturation"

1

Nelson, B. C., T. I. Eglinton, J. S. Seewald, M. A. Vairavamurthy, and F. P. Miknis. Transformations in organic sulfur speciation during maturation of Monterey shale: Constraints from laboratory experiments. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/102296.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Saillant, Eric, Jason Lemus, and James Franks. Culture of Lobotes surinamensis (Tripletail). Mississippi Department of Marine Resources, 2014. http://dx.doi.org/10.18785/ose.001.

Full text
Abstract:
The Tripletail, Lobotes surinamensis, is a pelagic fish found in tropical and sub-tropical waters of all oceans. Tripletails are often associated with floating debris and make frequent incursions in bays and estuaries where they are targeted by recreational fishermen. In Mississippi waters the species is typically present during the late spring and summer season that also correspond to the period of sexual maturation and spawning (Brown-Peterson and Franks 2001). Tripletail is appreciated as a gamefish but is also prized for its flesh of superior quality. The fast growth rate of juveniles in captivity documented by Franks et al. (2001) and the excellent quality of Tripletail flesh both contribute to the potential of this species for marine aquaculture. In addition, the production of cultured juveniles would be precious to develop a better understanding of the biology, early life history and habitat use of Tripletail larvae and juveniles, a topic largely undocumented to date, through experimental releases and controlled studies. The culture of tripletail thus supports the Tidelands Trust Fund Program through improved conservation of natural resources, potential enhancement of fisheries productivity and potential development of a new economic activity on the Gulf coast producing tripletail via aquaculture. The Objective of this project was to initiate development of methods and techniques needed to spawn captive held tripletail broodfish and raise their offspring to evaluate their growth and development in captivity. In this report we will present the results of studies aiming to develop methods and protocols for captive spawning of tripletail and the first data obtained on the early development of tripletail larvae. A major issue that was encountered with tripletail broodstock development during the project lied in the difficulties associated with identifying the sex of adults caught in the wild and candidates for being incorporated in mating sets for spawning. This issue was addressed during the course of the project by examining the potential of a non-lethal method of hormonal sexing. The results of these preliminary investigations are presented in the third part of this report. All protocols used in the project were determined with the guidance of the Institutional Animal Care and Use Committee (IACUC) of the University of Southern Mississippi (USM IACUC protocol number 10100108).
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Experimental maturation' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography