Uncertainties inherent in the decomposition of a Transformation

This contribution adds to the points on the <indeterminacy of special relativity> made by De Abreu and Guerra. We show that the Lorentz Transformation can be composed by the physical observations made in a frame K of events in a frame K-prime viz i) objects in K-prime are moving at a speed v relative to K, ii) distances and time intervals measured by K-prime are at variance with those measured by K and iii) the concept of simultaneity is different in K-prime compared to K. The order in which the composition is executed determines the nature of the middle aspect (ii). This essential uncertainty of the theory can be resolved only by a universal synchronicity as discussed in [1] based on the unique frame in which the one way speed of light is constant in all directions.Comment: 10 pages including an appendix. Published in the European Journal of Physics as a Comment. Eur. J. Phys. 29 (2008) L13-L1

Hermitian clifford analysis

This paper gives an overview of some basic results on Hermitian Clifford analysis, a refinement of classical Clifford analysis dealing with functions in the kernel of two mutually adjoint Dirac operators invariant under the action of the unitary group. The set of these functions, called Hermitian monogenic, contains the set of holomorphic functions in several complex variables. The paper discusses, among other results, the Fischer decomposition, the Cauchy–Kovalevskaya extension problem, the axiomatic radial algebra, and also some algebraic analysis of the system associated with Hermitian monogenic functions. While the Cauchy–Kovalevskaya extension problem can be carried out for the Hermitian monogenic system, this system imposes severe constraints on the initial Cauchy data. There exists a subsystem of the Hermitian monogenic system in which these constraints can be avoided. This subsystem, called submonogenic system, will also be discussed in the paper

Oscillations of Moments and Structure of Multiplicity Distributions in e+e- Annihilation

Starting from the recognized fact that oscillations of moments with rank and shoulder structure in the multiplicity distribution have the same origin in the full sample of events in e+e- annihilation, we push our investigation to the 2-jet sample level, and argue in favor of the use of the negative binomial multiplicity distribution as the building block of multiparticle production in e+e- annihilation events. It will be shown that this approach leads to definite predictions for the correlation structure, e.g., that correlations are flavour independent.Comment: 6 pages, LaTeX2e (uses amsmath,epsfig,espcrc2), 4 postscript figures. To be published in the Proceedings of the XXVII International Symposium on Multiparticle Dynamics, Frascati (Italy), September 8--12, 199

Cajuína: como produzir com qualidade.

Anacardium occidentale L.; Os fundamentos; Linhas gerais de produção de cajuína em escala comercial; Descrição das etapas; A matéria-prima; O descastanhamento; Seleção; Pré-lavagem; Sanificação; Enxágue; Prensagem; Clarificação do suco; Filtrado; Enchimento das garrafas; Fechamento das garrafas; Tratamento térmico; Resfriamento; Alguns problemas e defeitos da cajuina; Turvação; Sedimentação após a estocagem prolongada; Falta de coloração característica; Cajuína sem gosto de caju; Cuidados e requisitos necessários com o recinto de processamento; Equipamentos básicos necessários.bitstream/CNPAT-2010/9247/1/Dc-095.pd

Interferência do material de construção na temperatura do ar no interior do escamoteador.

O desenvolvimento dos leitões na maternidade constitui-se um fator determinante para o sucesso econômico na granja. Dessa forma, objetivou-se avaliar o conforto térmico de dois escamoteadores diferentes para leitões. Foi utilizada uma sala com quatro celas parideiras individual, sendo dois escamoteadores de madeira e dois de polietileno. No interior de cada escamoteador e no centro geométrico de cada sala foi instalado um datalogger de temperatura e umidade. Os dados foram coletados em quatro lotes durante três semanas a cada 30 minutos. Essas variáveis foram analisadas, por meio do modelo de medidas repetidas. O escamoteador de polietileno foi mais adequado com 27,36 % e 27,19 % dos dados dentro da faixa de conforto, enquanto o de madeira obteve 13,61% e 23,85% nas semanas 1 e 2 respectivamente. Somente na terceira semana o escamoteador de madeira obteve melhores resultados com 42,45% enquanto o de polietileno obteve 16,52% dos dados dentro da faixa de conforto. Ambos os escamoteadores obtiveram bons resultados quanto a umidade, obtendo média de dados dentro da faixa ideal de 58,30% o de polietileno e 69,85%, o de madeira. Piglet development in the farrowing house is a determining factor for the economic success the farm. The objective was to evaluate the thermal comfort of two different creeps for piglets. For this, it was used a farrowing house with four individual cells, twomade of wood, and two ofpolyethylene. Inside each creep and at the geometric center of each room , a datalogger was installed for recording the temperature and humidity. Data were collected in four batches every 30 minutes for three weeks. These variables were analyzed using a repeated measures model. The polyethylene creep was the most suitable with 27.36 % and 27.19% of the data within the comfort range, while the wooden creep achieved 13.61 % and 23.85% , in the weeks 1 and 2, respectively. Only on the third week the wood creep presented better results, with 42.45%, whereas that of polyethylene attained 16.52% of the data within the comfort rang. Both creeps achieved satisfactory results for the humidity, reaching mean values within the appropriate range, 58.30% and 69.85%, for polyethylene and wood creeps, respectively

Ionospheric response to the 2009 sudden stratospheric warming over the equatorial, low, and middle latitudes in the South American sector

The present study investigates the ionospheric total electron content (TEC) and F-layer response in the Southern Hemisphere equatorial, low, and middle latitudes due to major sudden stratospheric warming (SSW) event, which took place during January-February 2009 in the Northern Hemisphere. In this study, using 17 ground-based dual frequency GPS stations and two ionosonde stations spanning latitudes from 2.8°N to 53.8°S, longitudes from 36.7°W to 67.8°W over the South American sector, it is observed that the ionosphere was significantly disturbed by the SSW event from the equator to the midlatitudes. During day of year 26 and 27 at 14:00 UT, the TEC was two times larger than that observed during average quiet days. The vertical TEC at all 17 GPS and two ionosonde stations shows significant deviations lasting for several days after the SSW temperature peak. Using one GPS station located at Rio Grande (53.8°S, 67.8°W, midlatitude South America sector), it is reported for the first time that the midlatitude in the Southern Hemisphere was disturbed by the SSW event in the Northern Hemisphere.Fil: Fagundes, P. R.. Universidade do Vale do Paraíba; BrasilFil: Goncharenko, L. P.. Massachusetts Institute of Technology; Estados UnidosFil: De Abreu, A. J.. Universidade do Vale do Paraíba; BrasilFil: Venkatesh, K.. Universidade do Vale do Paraíba; BrasilFil: Pezzopane, M.. Istituto Nazionale Di Geofisica E Vulcanologia; ItaliaFil: De Jesus, R.. Universidade do Vale do Paraíba; BrasilFil: Gende, Mauricio Alfredo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Coster, A. J.. Massachusetts Institute of Technology; Estados UnidosFil: Pillat, V. G.. Universidade do Vale do Paraíba; Brasi

Taxa de semeadura, herbicidas e tratamento de sementes para plantio direto a lanço de Brachiaria brizantha cv. Xaraés.

O objetivo deste estudo foi determinar a melhor combinação de tratamento de sementes, herbicidas e taxa de semeadura para plantio direto a lanço da Brachiaria brizantha cv. Xaraés. O delineamento foi em blocos ao acaso, com quatro repetições. Os tratamentos foram arranjados no esquema fatorial 4x2x2, com quatro taxas de semeadura (2,82; 5,64; 11,28 e 22,56 kg/ha de sementes puras germináveis - SPG), dois tratamentos de sementes (com e sem fipronil) e dois herbicidas (atrazina em pré-emergência ou 2,4-D em pós-emergência). O tratamento de sementes com fipronil não afetou o estabelecimento do capim-xaraés. A atrazina em pré-emergência aumentou a eficiência de controle de plantas daninhas monocotiledôneas, permitindo reduzir a taxa de semeadura do capim-xaraés para 5 kg/ha de SGP. Com o uso do 2,4-D em pós-emergência a taxa de semeadura mínima deve ser de 7 kg/ha de SPG