Fluctuation Level
Mostrando 1-12 de 83 artigos, teses e dissertações.
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1. CORRELATING SINGLE-MOLECULE SERS STATISTICS TO PLASMONIC NANOCLUSTER STRUCTURE AND NEAR-FIELD PROPERTIES
Near-field properties due to surface plasmon excitation is a key element for different applications of metal nanoparticles, such as surface-enhanced Raman scattering (SERS). Therefore, a characterization of such properties is fundamental for the correct interpretation of experimental results, such as the strong fluctuation of intensities observed at low anal
Quím. Nova. Publicado em: 05/12/2019
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2. Comments to Angulo et al. 2016 on “Sea-level fluctuations and coastal evolution in the state of Rio de Janeiro, southeastern - Brazil” by Castro et al. 2014
ABSTRACT Interpretation of sea-level indicators is essential when studying paleo sea-level fluctuations during the Holocene. Sea-level indicators may have different origins, such as geological (beachrocks) and biological (vermetids and barnacles). In order to reconstruct paleo sea-level, it is necessary to attribute an indicative meaning to each sea-level in
An. Acad. Bras. Ciênc.. Publicado em: 2018-04
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3. Limit growth of ice crystals under different temperature oscillations levels in nile Tilapia
Abstract The degenerative effect of temperature fluctuations during storage time is a critical condition that needs to be quantitatively characterized in products where drip losses are appreciable. In this work, real storage conditions were reproduced using freezers modified to cause 3 levels of temperature fluctuation (± 0, ± 3, ± 5; ± 7) during storage
Food Sci. Technol. Publicado em: 20/03/2017
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4. Effect of Heat Stress on the Expression of GABA Receptor mRNA in the HPG Axis of Wenchang Chickens
ABSTRACT We investigated the effect of heat stress (HS) on the expression of the GABA receptor in the hypothalamic-pituitary-gonadal (HPG) axis of Wenchang chickens. Real-time quantitative RT-PCR (qRT-PCR) was used to quantify the GABA receptor mRNA levels along the HPG axis of chickens under HS (40±0.5 °C) for 1-6 weeks. Our results showed that the expres
Rev. Bras. Cienc. Avic.. Publicado em: 2016-06
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5. Contribution of the IAM Pathway to IAA Pool in Developing Rice Grains
A possible role for the indole-3-acetamide (IAM) pathway in the indole-3-acetic acid (IAA) production was investigated in developing rice grains. IAM-hydrolase proposed to convert IAM to IAA primarily through the identification of IAM and IAM-hydrolase activity in some plant species. Expression profiles of the two putative rice IAM-hydrolase genes, OsAMI1&2,
Braz. arch. biol. technol.. Publicado em: 06/05/2016
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6. Prostate-Specific Antigen fluctuation: what does it mean in diagnosis of prostate cancer?
Objective To investigate whether prostate-specific antigen (PSA) fluctuation correlates with a prostate cancer and to assess whether PSA fluctuation could be used for diagnosis of prostate cancer. Materials and Methods Our study included 229 patients who were performed a prostate biopsy (non-cancer group, 177; prostate cancer group, 52). Enrolled patients w
Int. braz j urol.. Publicado em: 2015-04
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7. The level of environmental noise affects the physiological performance of Glycine max under water deficit
Plants in natural environments are subjected to a multitude of environmental cues. However, studies addressing physiological analyzes are usually focused on the isolation of a stress factor, making it difficult to understand plants behavior in their extremely complex natural environments. Herein, we analyzed how environmental variability (noise) may influenc
Theor. Exp. Plant Physiol.. Publicado em: 2013
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8. Ensaios em história do pensamento econômico / Essays on the history of economic thought
This PhD thesis contains three independent (although complementary) essays on the History of Economic Thought, more specifically on Macroeconomics History. The first essay - A Brief History of the Disequilibrium Approach in Macroeconomics - is a revised and expanded version of paper presented at the XXXVIII Meeting of ANPEC. Our argumentation challenges Rome
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2012
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9. Estudo dos mecanismos de fadiga e análise de desempenho em mola para válvula automotiva em regime de alto e ultra-alto ciclo. / Study on the fatigue mechanisms and performance analysis in automotive valve spring under high-and-ultra-high-cycle regime.
This paper presents a study on the valve spring fatigue mechanisms, carried out through analysis of mechanical behavior correlated to microstructural aspect. The samples were made of high strength steel Si-Cr, obtained by conventional (quenching and tempering) and unconventional (austempering) heat treatments, generating a single level of hardness (approxima
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/03/2012
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10. RECARGA E FLUTUAÇÃO DO NÍVEL DA ÁGUA SUBTERRÂNEA EM SUBBACIAS COM FLORESTA E CAMPO NATIVO / RECHARGE AND FLUCTUTION LEVEL OF GROUNDWATER IN SUB-BASINS WITH FOREST AND NATIVE FIELD
A presente pesquisa busca contribuir com as investigações voltadas ao conhecimento do comportamento das águas subterrâneas. Com finalidade de determinar a estimativa de recarga subterrânea e análise da flutuação do nível da água em relação a eventos de precipitação pluviométrica. Atendendo aos objetivos a investigação se apóia nos referenci
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/11/2011
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11. Spatial patterns of zooplanktivore Chirostoma species (Atherinopsidae) during water-level fluctuation in the shallow tropical Lake Chapala, Mexico: seasonal and interannual analysis
This study addresses the influence of water-level fluctuations on fish distribution at two temporal scales: seasonal (dry and rainy) and interannual (low and high volume conditions). The analysis of abundance relationships among three zooplanktivore Chirostoma species at fifteen sites in Lake Chapala, Mexico, revealed the significant influence of contrasting
Neotropical Ichthyology. Publicado em: 2011
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12. Tamaño poblacional, uso del hábitat y relaciones interespecíficas de Agalychnis spurrelli (anura: hylidae) en un bosque húmedo tropical remanente del noroccidente de Ecuador
Throughout 2006 and 2007, at a small swamp in San Francisco del Cabo, northwestern Ecuador, monthly field expeditions were done to monitor a population of the leaf frog Agalychnis spurrelli with the following aims: (1) to determine population size and annual fluctuation; (2) to determine spatial distributional patterns and microhabitat resource partitioning;
Papéis Avulsos de Zoologia (São Paulo). Publicado em: 2011