oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 10 )

2018 ( 21 )

2017 ( 13 )

2016 ( 21 )

Custom range...

Search Results: 1 - 10 of 14619 matches for " Waldemar Wolney Filho "
All listed articles are free for downloading (OA Articles)
Page 1 /14619
Display every page Item
The Quantum Oscillatory Modulated Potential - Part II - The Stability of the Hydrogen Atom  [PDF]
Waldemar Wolney Filho
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.38090
Abstract: The purpose of this work is to show the stability of the hydrogen atom with the use the Quantum Oscillatory Modulated Potential and the Heisenberg equations of motion, postulating that the electron in the hydrogen atom is behaving as a quantum harmonic oscillator. With the electron confined between two potential barriers, created by the new potential function, we are considering that at absolute temperature the power absorbed or emitted by the electron per unit of time can be used to determine the zero point energy of the oscillator. Assuming that electron is only exchanging energy with the nucleus of the atom we are making use of the operators of creation and annihilation of a photon to explain how the energy between the proton and the electron can be exchanged to keep the atom a stable system.
The Quantum Oscillatory Modulated Potential Ⅰ- The Hydrogen Atom  [PDF]
Waldemar Wolney Filho
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.37081
Abstract: In this work we are presenting a modified Coulomb potential function to describe the interaction between two micro-scopic electric charges. In particular, concerning the interaction between the proton and the electron in the hydrogen atom. The modified potential function is the product of the classical Coulomb potential and an oscillatory function dependent on a quantized phase factor. The oscillatory function picks up only selected points along the Coulomb potential, creating potential wells and barriers around the nucleus of the atom. The new potential reveals us new features of the hydrogen atom. Searching for a manner to determine the phase factor, we are using the concept of the de Broglie particle wavelike behavior and the quantum analogue of the virial theorem for describing the bound motion of a particle in a central force field. This procedure is a kind of feedback action, where we are making use of well established concepts of the quantum mechanics aiming to determine the phase factor of the new interaction potential.
The Quantum Oscillatory Modulated Potential—Electric Field Wave Packets Produced by Electrons  [PDF]
Waldemar Wolney Filho
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.614216
Abstract: In this work we are formulating a new theory for describing the waving nature of a microscopic electric particle. Based on the predictions of the Quantum Oscillatory Modulated Potential—QOMP, for describing the interaction between two microscopic electric particles, electron-electron, for instance, we are postulating that the waving behavior of these particles may be an attribute of the charges of the particles and not their masses as currently accepted. For a microscopic electric charge, we are presenting new arguments showing that the electric field in the vicinity of a microscopic charge is spatially waving and can be determined as the gradient per unit of charge of this new quantum interaction potential, with use of an appropriated phase factor to account for the behavior of an unbound electron. Differently of what is predicted by the classical Coulomb electric field, when a charged particle is moving under the action of a potential of V volts, the new electric field existing around the charge has the form of a wave packet. For typical values of the potential V, the wavelength of the waving electric field is in very good agreement with those experimentally observed with diffraction of electrons in crystalline solids.
Images by Nuclear Magnetic Resonance: A Modified Version of the EPI Method
Ramalho, Simone Souza;Borges, Nilson Mendes;Wolney Filho, Waldemar;
Brazilian Journal of Physics , 2001, DOI: 10.1590/S0103-97332001000200025
Abstract: it is well known that data accquisition times and image reconstruction procedures in conventional magnetic resonance imaging (mri) are usually long. for time dependent phenomena, such as sample motion, respiration, blood flow pulsation and others, faster accquision times are desirable to avoid ghosting artifacts. over the last two decades, a great number of fast and ultra-fast mri methods have been proposed that greatly reduce the accquision times. one of them is the echo-planar imaging (epi) method which uses a single excitation scheme to scan entirely the k-space in a very short time. in the initial sections of this work we will supply the reader with a brief description of the image reconstruction procedures for the conventional mri sequence and four different schemes of the epi method. however, our main objective is to propose a modified version of the spin-echo epi method, suggesting a sequence with the use of a constant phase encoding gradient.
Images by Nuclear Magnetic Resonance: A Modified Version of the EPI Method
Ramalho Simone Souza,Borges Nilson Mendes,Wolney Filho Waldemar
Brazilian Journal of Physics , 2001,
Abstract: It is well known that data accquisition times and image reconstruction procedures in conventional magnetic resonance imaging (MRI) are usually long. For time dependent phenomena, such as sample motion, respiration, blood flow pulsation and others, faster accquision times are desirable to avoid ghosting artifacts. Over the last two decades, a great number of fast and ultra-fast MRI methods have been proposed that greatly reduce the accquision times. One of them is the echo-planar imaging (EPI) method which uses a single excitation scheme to scan entirely the k-space in a very short time. In the initial sections of this work we will supply the reader with a brief description of the image reconstruction procedures for the conventional MRI sequence and four different schemes of the EPI method. However, our main objective is to propose a modified version of the spin-echo EPI method, suggesting a sequence with the use of a constant phase encoding gradient.
Educa o dos Sentidos: Música e Subjetividade
Wolney Honorário Filho
OPSIS : Revista do Departamento de História e Ciências Sociais , 2001,
Abstract: This article comes to vary by inflection two perspectives: the love promotion like a passion feelings and the no longer intercutural teaching discussion promotion. The education land is submerged into too many languages alternatives, which of them, such as musical language, can appear like alternatives for our daily practice as teachers that look for teach to think. / Este ensaio vem flexionar duas perspectivas: a da promo o do amor como sentimento passional e a da n o menos promocional discuss o sobre alfabetiza o intercutural. O terreno educacional está imerso em múltiplas alternativas de linguagens, as quais, como por exemplo a linguagem musical, podem se apresentar como alternativas para nossas práticas cotidianas de educadores que procuram ensinar a pensar.
ALGUMAS TONALIDADES DO HOMEM DO SERT O: CORNéLIO PIRES E MONTEIRO LOBATO
Wolney Honório Filho
Boletim Goiano de Geografia , 1993,
Abstract: .
Aproveitamento da água de umidifica??o de malte da moagem úmida como matéria prima na fabrica??o de cerveja
VENTURINI FILHO, Waldemar G.;NOJIMOTO, T.;
Ciência e Tecnologia de Alimentos , 1999, DOI: 10.1590/S0101-20611999000200003
Abstract: the wet milling malt steep water can be used as raw material on brewing. however, some breweries discard this water containing a certain amount of extract. based on this fact, the aim of this work was to evaluate possible gain in mashing efficiency as well as changes in beer characteristics. pilsen beer was produced with and without malt steep water. the brewing raw materials were malt, hop, maltose syrup, distilled water and malt steep water. the wort was produced through infusion process, separated from spent grain through conventional filtration and then boiled for 60 minutes. after being cooled and clarified, it was inoculated with lager yeast (1,3g/l, dry matter basis). fermentation temperature was 10°c and the fermentative process was finished at 90% of the limit attenuation. the beer was bottled and then lagered at 0°c for 14 days. the results showed that mashing efficiency increase by malt steep water utilisation was statistically not significant. the use of steep water did not change chemical and sensorial characteristics of the beer; but there was a light increase in beer colour (7,1 x 8,0 ebc). the author concluded that malt steep water produced on industrial scale presents major extract concentration when compared to malt steep water produced on laboratory scale. in this way, the author suggested that industrial breweries which use wet milling should also use the malt steep water. thus, there is the possibility of gain in mashing efficiency without changes in beer characteristics.
HIDROLISADO DE FéCULA DE MANDIOCA COMO ADJUNTO DE MALTE NA FABRICA??O DE CERVEJA: AVALIA??O QUíMICA E SENSORIAL
VENTURINI FILHO, Waldemar G.;CEREDA, Marney P.;
Ciência e Tecnologia de Alimentos , 1998, DOI: 10.1590/S0101-20611998000200002
Abstract: the brazilians breweries replace progressively starchy adjuncts by sugary liquid adjuncts made with maize. thus, the objective of present work was saccharify cassava and maize and use them as malt adjunct on pilsen beer production, in laboratory scale. the syrups (35 °brix) were produced with cassava and maize starch by utilisation of termamil and fungamil commercial enzymes. the beers were made using malt and syrups in proportion of 2: 1, on extract basis. the wort was produced by infusion process, after cooling and clarification it was inoculated with lager yeast. the fermentation temperature was 10°c and the fermentative process was finished with 90% of attenuation. after that, the beers were bottled and lagered at 0°c by 14 days. the beers were chemically and sensorially analysed. the similarity of chemical composition of cassava and maize syrups reflected on the chemical composition of worts and beers. the chemical analysis showed there was not statistical difference between wort produced with cassava syrup and wort made with maize syrups. as well, the chemical analysis showed beers made with these adjuncts did not present statistical difference. the sensory analysis realised by triangular test, showed beer made with cassava syrup and beer produced with maize syrup were equal. it was concluded that cassava starch presents potential utilisation as raw material for brew maltose syrup production.
HIDROLISADO DE FéCULA DE MANDIOCA COMO ADJUNTO DE MALTE NA FABRICA O DE CERVEJA: AVALIA O QUíMICA E SENSORIAL
VENTURINI FILHO Waldemar G.,CEREDA Marney P.
Ciência e Tecnologia de Alimentos , 1998,
Abstract: Em virtude da progressiva substitui o dos adjuntos amiláceos pelos xaropes com alta concentra o de maltose nas cervejarias brasileiras, o presente trabalho teve por objetivo comparar hidrolisados de milho e de mandioca, como adjunto de malte, na fabrica o de cerveja tipo Pilsen, em escala de laboratório. Os hidrolisados foram produzidos a partir de amido de milho e fécula de mandioca, sendo que na liqüefa o e sacarifica o da fra o amilácea destes produtos foram utilizadas, respectivamente, as enzimas comerciais Termamil (alfa amilase bacteriana) e Fungamil (alfa amilase fúngica). Na fabrica o das cervejas, a propor o de malte e hidrolisado foi de 2 para 1, na base do extrato. O mosto foi produzido pelo processo de infus o e após resfriamento e clarifica o foi inoculado com levedura cervejeira de baixa fermenta o. A fermenta o transcorreu a 10 °C até 90% de atenua o do extrato aparente fermentável. As cervejas foram engarrafadas e, em seguida, maturadas a 0 °C, por 14 dias. Terminado o processo de fabrica o, as cervejas foram analisadas química e sensorialmente. A semelhan a na composi o química dos hidrolisados de milho e de mandioca refletiu na composi o química dos mostos e das cervejas. N o houve diferen a estatística entre os mostos e entre as cervejas testadas para todos os parametros químicos analisados. Também, n o existiu diferen a sensorial entre as cervejas produzidas com hidrolisado de milho e hidrolisado de mandioca. Concluiu-se que a fécula de mandioca apresenta potencial de uso como matéria prima para a fabrica o de xarope de maltose de uso cervejeiro e que há elevada probabilidade de sucesso no uso desse xarope para a fabrica o de cervejas.
Page 1 /14619
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.