Zero Emission
Mostrando 1-12 de 38 artigos, teses e dissertações.
-
1. Greenhouse gas emission, water quality and straw decomposition as a function of rice postharvest field management
ABSTRACT The objective of this paper was to evaluate the quality of water drained after the use of the knife-roller (an implement used to incorporate rice residues after harvest), the partial global warming potential (pGWP) and straw decomposition as a result of postharvest field management of irrigated rice. The experiments were conducted during the 2018 an
Bragantia. Publicado em: 2020-09
-
2. “Valve-In-Valve” Mitral por Via Transeptal: Um Papel de Destaque no Tratamento da Disfunção de Biopróteses no Brasil?
ABSTRACT The objective of this paper was to evaluate the quality of water drained after the use of the knife-roller (an implement used to incorporate rice residues after harvest), the partial global warming potential (pGWP) and straw decomposition as a result of postharvest field management of irrigated rice. The experiments were conducted during the 2018 an
Arq. Bras. Cardiol.. Publicado em: 2020-09
-
3. Diurnal Pattern of Leaf, Flower and Fruit Specific Ambient Volatiles above an Oil Palm Plantation in Pará State, Brazil
Oil palm plantations are rapidly expanding in the tropics because of insatiable global demand for fruit oil to be used in food, biofuels and cosmetics. Here we show that three tissue-specific volatiles can be quantified in ambient air above an African-American hybrid oil palm plantation in Brazil and linked photosynthesis (isoprene), floral scent (estragole)
J. Braz. Chem. Soc.. Publicado em: 2016-08
-
4. Relationship between residual feed intake and enteric methane emission in Nellore cattle
Feed intake and average daily gain (ADG) in Nellore cattle were determined to calculate residual feed intake in two performance tests: first during the growth phase (RFIgrowth) and then during a measurement of the methane emission phase (RFImet). During the RFIgrowth test, 62 males and 56 females were classified as low-, medium-, and high-RFI. Enteric methan
R. Bras. Zootec.. Publicado em: 2015-07
-
5. Espectroscopia ultrarrápida do polímero semicondutor luminescente MEH-PPV com excitação no ultravioleta / Ultrafast spectroscopy of the luminescent semiconducting polymer MEH-PPV with ultraviolet excitation
The optoelectronics industry is currently undergoing a transition period in which inorganic materials are being replaced by organic materials, oligomers and polymers, in the fabrication of some types of devices. However, factors such as low efficiency and low lifetime prevent polymer based devices on entering the market definitely. The solution of these issu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/08/2012
-
6. Emissão de elétrons por efeito de campo em dispositivos de grafeno
Since graphene was first isolated in 2004 by the micromechanical exfoliation of graphite, many research groups focused their works in studying the properties of this material. Graphene is a strictly bidimensional system very resilient to mechanical tension which presents high charge carriers mobilities, anomalous quantum hall effect observed even at room tem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2012
-
7. Modelling undesirable outputs with zero sum gains data envelopment analysis models.
Data envelopment analysis (DEA) literature has proposed alternative models for performance assessment in the presence of undesirable outputs, such as pollutant emissions, where increased outputs imply reduced performance. However, the case where global equilibrium of outputs should be imposed has not yet been considered. We propose that the zero sum gains DE
Journal of the Operational Research Society. Publicado em: 2011
-
8. LEGITIMAÇÃO INSTITUCIONAL DO JORNALISMO INFORMATIVO NAS MÍDIAS SOCIAIS DIGITAIS: estratégias emergentes no conteúdo de Zero Hora no Twitter
This thesis has as context the institutional legitimation crisis that occurs in our society and affects the mediating role of journalism informative, maximized by the interactive practices of digital social media, with their abilities for participation, sharing and decentralized distribution of messages by public. This logic is opposed to the broadcast model
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
-
9. Microlasers de cavidades estadio aplicados a detecção nanovolumetrica / Stadium cavities microlasers applied to the nanovolumetric detection
This work presents the development of resonant cavities based on chaotic billiard geometries built with semiconductor active optical medium for sensing applications. In spite of the classically chaotic behavior of the stadium, the quantum description of the problem in the semi-classical limit shows unexpected accumulations of the density of probability on cl
Publicado em: 2010
-
10. Análise multi-espectral dos eventos cíclicos de Carinae / Multi-spectral analysis of the cyclic events of Eta Carinae
In this thesis, a multi-wavelength study on the cyclic events of Eta Carinae was performed. The presence of a hole in the polar region of the Homunculus was confirmed by the velocity maps of the [Fe II] 12567 line. The blue-shifted component of the He I 10830, detected towards the NW lobe, was mapped and it is in the equatorial plane. It was observed that wi
Publicado em: 2009
-
11. The double gaussian distribution of inhomogeneous barrier heights in Al/GaN/p-GaAs (MIS) schottky diodes in wide temperature range
The current-voltage (I-V) characteristics of metal-insulator-semiconductor (Al/GaN/p-GaAs) Schottky barrier diodes (SBDs) were investigated over a wide temperature range of 80-380 K. By using the thermionic emission (TE) theory, the zero bias barrier height ΦB0 calculated from I-V characteristics was found to increase with increasing temperature as the idea
Brazilian Journal of Physics. Publicado em: 2008-12
-
12. Magneto-tunelamento ressonante em super-redes de GaAs/AsGaAs
In this thesis we present three works in weakly coupled semiconductor superlattices of GaAs/AlGaAs. In the first work we present an investigation of the electric field domain configuration in the sequential tunneling regime in weakly coupled superlattices in the presence of a magnetic field applied parallel to the quantum well layers. We show that, for an ap
Publicado em: 2008