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Submitted by ALINE DE FREITAS MORONI null (ali-moroni@hotmail.com) on 2016-05-17T15:39:59Z No. of bitstreams: 1 Rotações no espaço tridimensional por meio de produtos quaterniônicos..pdf: 761793 bytes, checksum: 0d00cba6c4297a34f603a3b61904efc4 (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-05-19T13:44:08Z (GMT) No. of bitstreams: 1 moroni_af_me_rcla.pdf: 761793 bytes, checksum: 0d00cba6c4297a34f603a3b61904efc4 (MD5) / Made available in DSpace on 2016-05-19T13:44:08Z (GMT). No. of bitstreams: 1 moroni_af_me_rcla.pdf: 761793 bytes, checksum: 0d00cba6c4297a34f603a3b61904efc4 (MD5) Previous issue date: 2016-04-20 / Neste trabalho pretendemos descrever o processo de construção da álgebra dos quatérnios, e a interpretação da multiplicação desses objetos via rotações no espaço. Para isto, vimos a necessidade de iniciar com conceitos que formam a base da álgebra, listando axiomas para o sistema de números reais e complexos. / The aim of this work is to describe the construction of the quaternion algebra and to interpret the multiplication operation via tridimensional rotations. For that we begin with basic algebraic concepts, and we list the axioms for the real and complex number systems.

Made available in DSpace on 2014-06-11T19:35:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-02-16Bitstream added on 2014-06-13T19:24:48Z : No. of bitstreams: 1 queiroz_rp_dr_ilha.pdf: 1433368 bytes, checksum: da394fb054e147bac86fee358da18db7 (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / As culturas agrícolas são responsável pela terça parte da produtividade de grãos destinada à alimentação brasileira, desempenhando importante papel econômico-financeiro à nação. Desta forma, no ano agrícola 2005/2006, na Fazenda de Ensino, Pesquisa e Extensão da Faculdade de Engenharia/UNESP- Campus Ilha Solteira, localizada no município de Selvíria-MS (20º22´S, 51º22´W e 335m de altitude média), foram estudadas a variabilidade e a dependência espacial entre alguns atributos do solo e componentes de produção da soja, quando rotacionada após milho safrinha, sobre um Latossolo Vermelho Distroférrico. Assim, foram estudadas as correlações lineares e espaciais entre os atributos do solo (MA, MI, PT, DS e MO) e os da planta (AP, AV, NV, NG, MM e PG), com o objetivo de selecionar aquele que melhor se apresentasse para explicar a produtividade de grãos de soja. Para tanto, na área agrícola da FEPE/Cerrado, instalou-se a malha geoestatística contendo 124 pontos amostrais, com espaçamento de 10,0 x 10,0 m, 5,0 x 5,0 m e 1,67 x 1,67 m entre eles, numa área total de 4000 m2. Do ponto de vista linear e espacial, foi observada correlação direta entre a macroporosidade, avaliada de zero-0,10 m de profundidade e a produtividade de grãos de soja, sugerindo-a como indicadora da qualidade física do solo pesquisado. / The crops are responsible for third of grain yield for the Brazilian food, performing economic and financial importance to the nation. Thus, in the agricultural year 2005/2006, the Finance of Education, Research and Extension, Universidade/UNESP-Campus Ilha Solteira, located in Selvíria-MS (20 ° 22'S, 51 º 22'W and 335m of altitude average) , evaluated the variability and spatial dependence among soil attributes and components of the soybean production, where rotational after winter maize on an Oxisol. Therefore, we studied the linear and spatial correlation between soil attributes (MA, MI, PT, DS, and MO) and the plant (AP, AV, NV, NG, MM and PG) with the goal of selecting that better to present to explain the grain yield of soybean. Thus, the area's agricultural FEPE / Cerrado, installed to geostatistics mesh containing 124 sampling points with spacing of 10.0 x 10.0 m, 5.0 x 5.0 x 1.67 m 1.67 m between them, a total area of 4000 m2. From a linear and space, was a direct correlation between the macroporosity, evaluated from zero-0, 10 m depth and grain yield of soybean, suggesting it as an indicator of soil physical quality searchable.

The environmental risk of growing genetically modified (GM) crops and particularly the spreading of GM genes to related non-GM crops is currently a concern in European agriculture. Because the risks of contamination are linked to the spatial and temporal arrangements of crops within the landscape, scenarios of crop arrangement are required to investigate the risks and potential coexistence measures. However, until recently, only manual methods were available to create scenarios. This thesis aims to provide a flexible referenced tool to create such scenarios. The model, called LandSFACTS, is a scientific research tool which allocates crops into fields, to meet user-defined crop spatio-temporal arrangements, using an empirical and statistical approach. The control of the crop arrangements is divided into two main sections: (i) the temporal arrangement of crops: encompassing crop rotations as transition matrices (specifically-developed methodology), temporal constraints (return period of crops, forbidden crop sequences), initial crops in fields regulated by temporal patterns (specifically-developed statistical analyses) and yearly crop proportions; and (ii) the spatial arrangements of crops: encompassing possible crops in fields, crop rotation in fields regulated by spatial patterns (specifically-developed statistical analyses), and spatial constraints (separation distances between crops). The limitations imposed by the model include the size of the smallest spatial and temporal unit: only one crop is allocated per field and per year. The model has been designed to be used by researchers with agronomic knowledge of the landscape. An assessment of the model did not lead to the detection of any significant flaws and therefore the model is considered valid for the stated specifications. Following this evaluation, the model is being used to fill incomplete datasets, build up and compare scenarios of crop allocations. Within the GM coexistence context, the model could provide useful support to investigate the impact of crop arrangement and potential coexistence measures on the risk of GM contamination of crops. More informed advice could therefore be provided to decision makers on the feasibility and efficiency of coexistence measures for GM cultivation.

Made available in DSpace on 2014-06-11T19:30:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-12-07Bitstream added on 2014-06-13T19:40:02Z : No. of bitstreams: 1 merlin_a_dr_botfca.pdf: 247238 bytes, checksum: 8b242166e83fa415bcc296dd80389b90 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O fornecimento de P para as culturas em solos tropicais é geralmente deficiente devido à sua natureza pouco solúvel no solo, e a adição de fertilizantes P tem sido obrigatória para se atingir rendimentos elevados. Uma abordagem possível é a adoção de sistemas de cultivo com plantas de alta eficiência no uso do P. O objetivo deste estudo foi determinar os mecanismos da braquiária (Brachiaria ruziziensis), cultivada em rotação, aumentando a disponibilidade de P no solo. Foram desenvolvidos dois experimentos: para o ensaio de campo os tratamentos foram doses de fosfato solúvel e natural aplicadas à lanço, com e sem cultivo de braquiária (Brachiaria ruziziensis). A gramínea foi cultivada por 289 dias e após esse período o solo foi amostrado de 0-5 e 5-10 cm de profundidade. O segundo experimento, em casa de vegetação, Brachiaria ruziziensis e Brachiaria brizantha foram cultivadas em solução nutritiva com complexos de P em óxidos de Ferro e Alumínio. À campo, os níveis de fósforo disponível foram superiores após o cultivo da gramínea. No experimento em casa de vegetação, o desenvolvimento das espécies de braquiária foi normal nos tratamentos onde o fósforo estava adsorvido pelos óxidos de Ferro e Alumínio, indicando a capacidade dessas duas espécies em acessar formas indisponíveis de P tornandoas disponíveis para outras culturas / Phosphorus supply to crops in tropical soils is usually deficient due its sparingly soluble nature in soil, and the addition of P fertilizers has been mandatory in order to achieve high yields. One potential approach is to adopt cropping systems that could increase plant available P in soil. The objective of this study was to examine the mechanisms of cover crop (Congo grass - Brachiaria ruziziensis) rotation in enhancing soil and fertilizer P availability using long-term field trials and laboratory chemical fractionation approaches. The first experiment was a field cropped under no-till for five years. No P or 35 kg ha-1 of P was applied on the soil surface as triple superphosphate or Arad rock phosphate and Congo grass was grown for 289 days. After this, soil samples were taken down to 10 cm and soil P was fractionated. The second experiment was carried out in a green house where the treatments were Brachiaria species (Brachiaria brizantha and Brachiaria ruziziensis) and two mineral-P complexes (goethite and amorphous Al-oxide) plus two controls with and without P as regular nutrient solution. In the first experiment, soil available P, as estimated by resin extraction was increased by congo grass down to10 cm when P fertilizers were applied. At the nutrient solution experiment, after 14 days of cultivation, the dry matter yields of both Brachiaria species were not affected by oxide-P (goethite-P or Al oxide-P) as sole P source, demonstrating that Brachiaria species could access non-labile adsorbed when P was supplied with Al oxide-P and goethite-P

abstract: Volumetric cell imaging using 3D optical Computed Tomography (cell CT) is advantageous for identification and characterization of cancer cells. Many diseases arise from genomic changes, some of which are manifest at the cellular level in cytostructural and protein expression (functional) features which can be resolved, captured and quantified in 3D far more sensitively and specifically than in traditional 2D microscopy. Live single cells were rotated about an axis perpendicular to the optical axis to facilitate data acquisition for functional live cell CT imaging. The goal of this thesis research was to optimize and characterize the microvortex rotation chip. Initial efforts concentrated on optimizing the microfabrication process in terms of time (6-8 hours v/s 12-16 hours), yield (100% v/s 40-60%) and ease of repeatability. This was done using a tilted exposure lithography technique, as opposed to the backside diffuser photolithography (BDPL) method used previously (Myers 2012) (Chang and Yoon 2004). The fabrication parameters for the earlier BDPL technique were also optimized so as to improve its reliability. A new, PDMS to PDMS demolding process (soft lithography) was implemented, greatly improving flexibility in terms of demolding and improving the yield to 100%, up from 20-40%. A new pump and flow sensor assembly was specified, tested, procured and set up, allowing for both pressure-control and flow-control (feedback-control) modes; all the while retaining the best features of a previous, purpose-built pump assembly. Pilot experiments were performed to obtain the flow rate regime required for cell rotation. These experiments also allowed for the determination of optimal trapezoidal neck widths (opening to the main flow channel) to be used for cell rotation characterization. The optimal optical trap forces were experimentally estimated in order to minimize the required optical power incident on the cell. Finally, the relationships between (main channel) flow rates and cell rotation rates were quantified for different trapezoidal chamber dimensions, and at predetermined constant values of laser trapping strengths, allowing for parametric characterization of the system. / Dissertation/Thesis / Demonstration of process flow in the microvortex chip / Cell rotation in a 50 microns wide (at the neck) trapezoidal chamber,at a flow rate of 95 microliters/min at approximately 0.25 rev/s / Cell rotation in a 70 microns wide (at the neck) trapezoidal chamber,at a flow rate of 7 microliters/min at approximately 0.125 rev/s / M.S. Bioengineering 2013

Orientador: William Dias Belangero / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-08-10T11:20:05Z (GMT). No. of bitstreams: 1 Regazzo_PedroHenrique_M.pdf: 918996 bytes, checksum: 0ee73c758e8f26d51e3b1fa9dbbe6a0d (MD5) Previous issue date: 2007 / Resmo: A articulação glenoumeral é indiscutivelmente a mais instável do corpo humano, provavelmente porque, às custas de uma grande amplitude apresenta uma pequena estabilidade tornando-a susceptível às lesões. Scovazzo et al (1991) demonstraram em seu estudo que os problemas na região do ombro acometem 66% dos nadadores, 57%dos jogadores de beisebol, 44% dos jogadores de voleibol e 7% dos golfistas. A grande incidência das lesões ocorre por excesso de treino, pela própria exigência do esporte e principalmente pelas características morfológicas da articulação do ombro, como por exemplo, excesso de rotação externa apresentada pelos atletas. O objetivo deste trabalho é observar o comportamento dos movimentos rotacionais da articulação do ombro em indivíduos de 03 ate 16 anos, praticantes ou não de voleibol profissional. Foram avaliados 681 indivíduos de ambos os sexos, sendo que à mensuração da amplitude de rotação interna e externa do ombro foi realizada pelo pesquisador, utilizando-se do goniômetro, seguindo os parâmetros de descrito por MOORE, 1946. Os participantes foram divididos em cinco grupos: Grupo I ¿ 03 a 06 anos, Grupo II ¿ 07 a 10 anos, Grupo III - 11 a 13 anos, Grupo IV ¿ 14 a 16 anos e Grupo V - 14 a 16 anos praticantes de atividade física. Quanto aos resultados, observa-se que há redução significativa da amplitude dos movimentos de rotação interna e rotação externa da articulação do ombro em função do aumento da idade sendo indiferente quanto ao gênero e lado. Quando analisada a amplitude de rotação interna e externa de adolescentes entre 14 e 16 anos praticantes e não praticantes de voleibol mostrou que há aumento significativo da rotação externa em praticantes / Abstract: The joint of the shoulder is unquestionably unstablest of the human body probably because the costs of a great amplitude present a small stability becoming it susceptible the injuries.Scovazzo et al (1991) had demonstrated in its study that the problems in the region of the shoulder provoke 66% of the swimmers, 57% of the baseball players, 44% of the volleyball players and 7% of the golf players. The great incidence of the injuries occurs for excess of trainings, for the proper requirement of the sport and mainly for the morphologic characteristics of the joint of the shoulder, as for example, excess of external rotation presented by the athletes. The objective of this work is to observe the behavior of the rotational movements of the joint of the shoulder in individuals of 3 the 16 years, practitioners or not of physical activity. Had been evaluated 681 individuals of both sex, being that the quantification of the amplitude of internal and external rotation of the shoulder was carried through by the researcher, using itself of goniometro, following the parameters described for Moore, 1946. The participants had been divided in five groups: group I - the 3 to 6 years, group II - the 7 to 10 years, group III - the 11 13 years, group IV - the 14 to 16 years and group V - the 14 to 16 years practicing of physical activity. How much to the results, we observe that the amplitude of the rotational movements in the shoulder of the participants between 3 and 10 years did not present statistical differences, in the comparison of the participants between 7 and 13 years we concluded that it had a reduction in the internal rotation in the ages most advanced, already in the comparison of the participants with age between 13 and 16 years it had a reduction of the external rotation of the shoulders of the participants of bigger age. When comparing the amplitude of rotational movement of the participant athletes of 14 the 16 years and not athlete of 14 the 16 years, a significant difference for the increase of the external rotation observed in the athletes / Mestrado / Cirurgia / Mestre em Cirurgia

Abstract In this thesis solar active longitudes of X-ray flares and sunspots are studied. The fact that solar activity does not occur uniformly at all heliographic longitudes was noticed by Carrington as early as in 1843. The longitude ranges where solar activity occurs preferentially are called active longitudes. Active longitudes have been found in various manifestations of solar activity, such as sunspots, flares, radio emission bursts, surface and heliospheric magnetic fields, and coronal emissions. However, the active longitudes found when using different rigidly rotating reference frames differ significantly from each other. One reason is that the whole Sun does not rotate rigidly but differentially at different layers and different latitudes. The other reason is that the rotation of the Sun also varies with time. Earlier studies used a dynamic rotation frame for the differential rotation of the Sun and found two persistent active longitudes of sunspots in 1878-1996. However, the migration of active longitudes with respect to the Carrington rotation was treated there rather coarsely. We improved the accuracy of migration to less than one hour. Accordingly, not only the rotation parameters for each class of solar flares and sunspots are found to agree well with each other, but also the non-axisymmetry of flares and sunspots is systematically increased. We also studied the long-term variation of solar surface rotation. Using the improved analysis, the spatial distribution of sunspots in 1876-2008 is analyzed. The statistical evidence for different rotation in the northern and southern hemispheres is greatly improved by the revised treatment. Moreover, we have given consistent evidence for the periodicity of about one century in the north-south difference.

Abstract Internal rotation in symmetric top molecules offers an excellent opportunity to investigate large amplitude motion in a relatively simple intramolecular environment. Due to specific symmetry characteristics of a symmetric top molecular frame, the internal rotation degree of freedom is in the zeroth order approximation separable from the small amplitude vibrations and the overall rotation, thus enabling to characterize the vibrational-torsional-rotational energy structure with a relatively simple Hamiltonian. Lessons from symmetric internal rotor studies may be applied to more complex systems, such as asymmetric internal rotors and macromolecules. This thesis deals with internal rotation in CH3SiH3, CH3SiD3, CH3CF3 which have become a prototype of symmetric internal rotors. The thesis presents high resolution vibration-torsion-rotation spectra and detailed analysis of these molecules. Particular attention is focused on torsion-mediated interactions, such as Coriolis-type interactions and Fermi-type interactions, coupling the internal rotation and the small amplitude vibrational motion. The studies show that the expansion of the data to the small amplitude vibrations and inclusion of the torsion-mediated interactions play a crucial role in order to obtain an appropriate characterization of the vibrational-torsional-rotational energy level structure and physically meaningful molecular parameters.

We present the results of a spectroscopic analysis of rotational velocities in 714 M-dwarf stars observed by the SDSS-III Apache Point Galactic Evolution Experiment (APOGEE) survey. We use a template-fitting technique to estimate v sin i while simultaneously estimating log g, [M/H], and T-eff. We conservatively estimate that our detection limit is 8 km s(-1). We compare our results to M-dwarf rotation studies in the literature based on both spectroscopic and photometric measurements. Like other authors, we find an increase in the fraction of rapid rotators with decreasing stellar temperature, exemplified by a sharp increase in rotation near the M4 transition to fully convective stellar interiors, which is consistent with the hypothesis that fully convective stars are unable to shed angular momentum as efficiently as those with radiative cores. We compare a sample of targets observed both by APOGEE and the MEarth transiting planet survey and find no cases where the measured v sin i. and rotation period are physically inconsistent, requiring sin i > 1. We compare our spectroscopic results to the fraction of rotators inferred from photometric surveys and find that while the results are broadly consistent, the photometric surveys exhibit a smaller fraction of rotators beyond the M4 transition by a factor of similar to 2. We discuss possible reasons for this discrepancy. Given our detection limit, our results are consistent with a bimodal distribution in rotation that is seen in photometric surveys.