W. Richard Webb, H. Dirk Sostman,
... No. 4Tumores invasivos do mediastino anteriorMaria Teresa MagalhãesGodinho1999May1 | Revista Portuguesa de Pneumologia, Vol. 5, No. 3MR imaging of pulmonary parenchyma with a half-Fourier single-shot turbo spin-echo (HASTE) sequenceHirotoHatabu, JochenGaa, EijiTadamura, Keith J.Edinburgh, ...
Tópico(s): Myasthenia Gravis and Thymoma
1992 - Radiological Society of North America | Radiology
Produção Nacional
Revisado por pares
Lucelia Borges da Costa, Ana Lúcia Vitale Torkomian,
Este artigo almeja apresentar o perfil dos spin-offs acadêmicos do Brasil. A metodologia utilizada foi a pesquisa exploratória e os dados foram coletados por meio de questionários enviados a 33 spin-offs de 9 universidades. Embora exista uma limitação devido ao número de empresas analisadas, o objetivo principal foi atingido satisfatoriamente. Os resultados obtidos apresentam as características, motivações e dificuldades dos spin-offs.
Tópico(s): Business and Management Studies
2008 - Associação Nacional de Pós-Graduação e Pesquisa em Administração (ANPAD) | Revista de Administração Contemporânea
Ve present self-dual spin-3 and 4 actions using relevant Dreibein fields. Since these actions start with a Chern-Simons like kinetic ter m (and therefore cannot be obtained through dimensional reduction) one might wonder whether they need the presence of auxiliary ghost-killing fields. It turns out that these actions must contain, even in this three dimensional case, auxiliary fields. Auxiliary scalars do not break self-duality since their free actions do not contain kinetic terms. RESUMEN. En este ...
Tópico(s): Biofield Effects and Biophysics
1993 - Mexican Society of Physics | Revista Mexicana de Física
Lynne G. Zucker, Michael R. Darby, Jeff Armstrong,
... of Institutional- and Ecosystem-Level Variables on University Spin-Off Performance18 June 2020 | SAGE Open, Vol. 10, No. 2A Framework for Designing Business-Acceleration Programs: A Case Study from EgyptEntrepreneurship Research Journal, Vol. 10, No. 2Fostering practice-oriented and use-inspired science in biomedical researchResearch Policy, Vol. 49, No. 2ORGANIZANDO LOS ESTUDIOS ORGANIZACIONALES EN CHILE: HISTORIA DE LA CREACIÓN DEL GRUPO MINGA1 March 2020 | Revista de Administração de Empresas, Vol. 60, No. 2Forms ...
Tópico(s): Private Equity and Venture Capital
2002 - Institute for Operations Research and the Management Sciences | Management Science
David Rodeiro Pazos, Sara Fernández López, Luís Otero González, Alfonso Rodríguez Sandiás,
Una de las vias con las que cuenta la universidad para transferir tecnologia a la sociedad es la creacion de empresas. Ademas, mediante este instrumento, la universidad puede contribuir al desarrollo de la economia local y a incrementar sus ingresos. Sin embargo, debido al caracter relativamente reciente del fenomeno de las spinoffs universitarias, no abundan los estudios empiricos sobre el tema. El objetivo de este trabajo es conocer que factores propios del ambito universitario determinan la creacion ...
Tópico(s): Private Equity and Venture Capital
2010 - Elsevier BV | Revista Europea de Dirección y Economía de la Empresa
David Rodeiro Pazos, Sara Fernández López, Luís Otero González, Alfonso Rodríguez Sandiás,
Universities now play a major role in regional economic and social development. This new mission is transforming the traditional university into an entrepreneurial university. This entrepreneurial activity has mainly been carried out by transferring technology to industry; in particular by creating spin-off firms. Drawing on a resource-based view, the objective of this paper is to understand why some Spanish universities are more successful than others at generating spin-offs. In order to determine ...
Tópico(s): Innovation and Knowledge Management
2012 - Elsevier BV | Revista Europea de Dirección y Economía de la Empresa
Produção Nacional
Revisado por pares
Beatriz M Terán-Pérez, Cuitláhuac Valdez Lafarga, Alejandra Miranda Félix,
El presente estudio explora la literatura científica relacionada con el emprendimiento académico y spin-off en el contexto universitario con el fin de identificar cómo está organizada la información en este campo de estudio, cuáles son los enfoques teóricos y metodológicos abordados en la literatura, así como detectar brechas para futuras líneas de investigación. Se realizó una revisión sistemática a 57 artículos indexados, obtenidos de la base de datos Scopus y publicados entre enero de 2014 y ...
Tópico(s): Entrepreneurship Studies and Influences
2020 - | Revista Perspectiva Empresarial
Produção Nacional
Revisado por pares
W. T. Cruz, Д. М. Гитман, Stoian I. Zlatev,
Tópico(s): Superconducting Materials and Applications
1996 - Springer Science+Business Media | Brazilian Journal of Physics
María Teresa Aceytuno Pérez, Felipe Rafael Cáceres Carrasco,
espanolEl objetivo de este articulo es presentar un marco para el analisis de las spin-offs universitarias. El trabajo se desarrolla tomando como referencia cuatro aspectos que han recibido una gran atencion en la literatura que sobre este tema se ha desarrollado en los ultimos anos: concepto de spinoff universitario, tipologia de spin-offs universitarios, proceso de formacion de spin-offs universitarios y factores determinantes de las spin-offs. EnglishThis paper reflects some of the insights of ...
Tópico(s): Innovation Policy and R&D
2009 - University of Huelva | Revista de Economía Mundial
Gheorghe Benga, Ioana-Costina Dansoreanu, Maria Frangopol, Petre T. Frangopol,
The main contributions of the groups lead by the two main authors (Gh.B and P.T.F.) in the field of spin labeling ESR in studies of serum albumin and of some biomembranes are briefly described, mentioning some priorities. These are: the description in Romanian publications of the methodology for using spin labels in studies of proteins and biomembranes using the type ART-6 ESR spectrometer manufactured in Romania; the adaptation to this ESR spectrometer of a computerized system for the acqusition ...
Tópico(s): Protein Interaction Studies and Fluorescence Analysis
2008 - Revista de Chimie | Revista de Chimie
Produção Nacional
Revisado por pares
Tópico(s): Magnetic properties of thin films
1996 - Springer Science+Business Media | Brazilian Journal of Physics
Purpose The purpose of this paper is to identify the minimum conditions for the formation of an ecosystem that favours the emergence of spin-offs whose parent company is a family business. Design/methodology/approach Three family companies that have experienced processes supporting the creation of new companies led by family members were used for this exploration. Findings The findings show that it is possible to form an ecosystem with five basic components from which other factors of a different ...
Tópico(s): Corporate Finance and Governance
2017 - Emerald Publishing Limited | Academia Revista Latinoamericana de Administración
Produção Nacional
Revisado por pares
A. Azevedo, F. M. de Aguiar, S. M. Rezende,
Tópico(s): Atomic and Subatomic Physics Research
1992 - Springer Science+Business Media | Brazilian Journal of Physics
Ahmed Youcef, Noureddine Bettahar, O. Cheref, Salah Eddine Benalia, Djamel Bezzerga, Nour-Eddine Benkhettou, Djamel Bezzerga,
The inspection of materials supporting topological excitations is one of the prospective areas of condensed matter physics. This paper is devoted to studying the possibility of the existence of topological phases in Na2CuX (X= As, Sb, Sn and Bi) full Heusler compounds using the FP-LMTO (Full-Potential Linear Muffin-Tin Orbital) method with and without spin-orbit coupling (SOC). The study of structural properties has found that these materials are energetically stable in the Hg2CuTi type structure. ...
Tópico(s): Boron and Carbon Nanomaterials Research
2023 - Mexican Society of Physics | Revista Mexicana de Física
Produção Nacional
Tatiana R. Cardoso, Antonio S. de Castro,
A equação de Klein-Gordon em uma dimensão espacial é investigada com a mais geral estrutura de Lorentz para os potenciais externos. A análise do espalhamento de partículas em um potencial degrau com uma mistura arbitrária de acoplamentos vetorial e escalar revela que o acoplamento escalar contribui para aumentar o limiar da energia de produção de pares. Mostra-se ainda que a produção de pares torna-se factível somente quando o acoplamento vetorial excede o acoplamento escalar. Um aparente paradoxo ...
Tópico(s): Quantum Mechanics and Applications
2007 - SOCIEDADE BRASILEIRA DE FÍSICA | Revista Brasileira de Ensino de Física
Rev.esc.adm.neg En el entorno universitario, se viene fomentando la generación de spin-off como alternativa para la construcción de una cultura empresarial, para lo cual se han estructurado estrategias como las incubadoras de empresas de base tecnológica, desde las cuales se espera acelerar las ideas de negocio y posicionarlas en el mercado. Sin embargo, hasta el momento, no se cuenta con un estudio que permita establecer los alcances que se han obtenido respecto de su surgimiento, consolidación ...
Tópico(s): Business, Education, Mathematics Research
2017 - Ean University | Revista Escuela de Administración de Negocios
HEMOS CALCULADO MINUCIOSAMENTE EL CALOR DINAMICO ESPECIFICO C(!) DE CIRCULOS QUE CONTIENEN SEIS ISING SPINS CONECTADOS, UTILIZANDO LA DINAMICA DE GLAUBER. HEMOS UTILIZADO LA INFLUENCIA DE LA ENERGIA INTERNA SOBRE LAS OSCILACIONES DE TEMPERATURA PARA CALCULAR EL C(!). LOS CIRCULOS DE CRISTAL REVUELTO Y FERROMAGNETIZADOS DESORGANIZADOS HAN DEMOSTRADO QUE TIENEN CUATRO NIVELES DE ENERGIA, Y POR ESO TIENEN CUATRO TIEMPOS DE DIVERGENCIA DURANTE LA EVOLUCION DE LA MAGNETIZACION. SIN EMBARGO, TIENEN TRES ...
Tópico(s): Quantum Computing Algorithms and Architecture
2009 - Mexican Society of Physics | Revista Mexicana de Física
Computational fluid dynamics (CFD) and population balance model (PBM) model have been used to simulate hydrodynamics and mass transfer in a 0.014 m3 Spin Filter Bioreactor. The operating conditions chosen were defined by typical settings used for culturing plant cells. Turbulence, rotating flow, bubbles breakage and coalescence were simulated by using the k-e, MRF (Multiple Reference Frame) and PBM approaches, respectively. The numerical results from different operational conditions are compared with ...
Tópico(s): Fluid Dynamics and Mixing
2015 - Universidad de Antioquia | Revista Facultad de Ingeniería Universidad de Antioquia
The geometric algebras of space and spacetime are derived by sucessively extending the real number system to include new mutually anticommuting square roots of ±1. The quantum mechanics of spin 1/2 particles are then expressed in these geometric algebras. Classical 2 and 4 component spinors are represented by geometric numbers which have parity, providing new insight into the familiar bra-ket formalism of Dirac. The classical Dirac Equation is shown to be equivalent to the Dirac-Hestenes equation, ...
Tópico(s): Noncommutative and Quantum Gravity Theories
2015 - Mexican Society of Physics | Revista Mexicana de Física
Produção Nacional
Revisado por pares
Embora seja fato estilizado que novos spin-offs de empregados apresentem taxas de sobrevivência superiores a de demais firmas entrantes, a literatura a respeito do crescimento dessas firmas, além de ser escasso, não parece convergir. Utilizando a ligação empregado-empregador da Relação Anual de Informações Sociais (RAIS) para o período de 2006 a 2015, spin-offs são identificados e segmentados entre os tipos pulled (oportunidade) e pushed (necessidade), quando a firma-mãe que deu origem continua ativa ...
Tópico(s): Private Equity and Venture Capital
2021 - UNIVERSIDADE FEDERAL FLUMINENSE | Revista de Administração Sociedade e Inovação
G. F. Torres del Castillo, Jorge Velázquez-Castro,
SE PROPONE UNA ECUACION NO RELATIVISTA PARA PARTICULAS DE ESPIN 3/2 Y SE DETERMINA LA RAZON GIROMAGNETICA PARA PARTICULAS DE ESPIN 3/2 CARGADAS. Abstract A NON-RELATIVISTIC EQUATION FOR SPIN-3/2 PARTICLES IS PROPOSED AND THE GYROMAGNETIC RATIO FOR CHARGED SPIN-3/2 PARTICLES IS DETERMINED.
Tópico(s): Quantum Mechanics and Applications
2004 - Mexican Society of Physics | Revista Mexicana de Física
Produção Nacional
Revisado por pares
Vinícius de Oliveira Rossi Arantes, Cassia Correa, Nádia Lunardi, Rodolfo Jorge Boeck Neto, Rubens Spin‐Neto, Eloísa Marcantônio Boeck,
AbstractObjectiveThe aim of this study was to assess the stresses and strains generated after the application of two types of forces (traction of 200 gf and torsion of 20 N.cm) in two types of orthodontic mini-implants inserted at different (45° and 90° to the cortical bone) angles.Material and methodthree-dimensional models of two brands of mini-implant (SIN – Sao Paulo, Brazil, and RMO – South Korea) were exported and analyzed by finite element analysis (FEA). Analyses were performed on simulations of ...
Tópico(s): dental development and anomalies
2015 - UNIVERSIDADE EST.PAULISTA JÚLIO DE MESQUITA FILHO | Revista de Odontologia da UNESP
Gerhard Haitchi, Johanna Buchroithner, Michael Sonnberger, Serge Weis, Franz A. Fellner,
... SayedAhmed, Julanda HamadAl Mawly, El-Sayed MohamedEl-Manakhly2019 | Revista Brasileira de Parasitologia Veterinária, Vol. 28, No. 3Cerebral coenurosis in a catMassimoOrioles, ElsaBeltran, JenniferStewart, BelgeesBoufana, AndrewHolloway2014 | Veterinary Record Case Reports, Vol. 2, No. 1Recommended Articles Imaging of Hydatid Disease with a Focus on Extrahepatic InvolvementRadioGraphics2017Volume: 37Issue: 3pp. 901-923Fundamentals of Radiation Oncology for Neurologic ImagingRadioGraphics2020Volume: 40Issue: 3pp. 827-858Arterial Spin Labeling: Techniques, Clinical Applications, and InterpretationRadioGraphics2022Volume: 43Issue: 1Multimodality ...
Tópico(s): Urological Disorders and Treatments
2012 - Radiological Society of North America | Radiographics
N. De La Espriella, César Ortega López, Francisco Torres-Hoyos,
Simulation and numerical study by mixed Ising spin modelsin various molecular magnets, in equilibrium and nonequi-librium [1–4], has become an important theoretical tool foranalysis and comprehension [5–8]. Currently these modelsare proposed as an excellent laboratory for understanding ofcertain thermomagnetic properties of some magnetic molec-ular materials two and three dimensional [9,10], among thehighlighting ferrimagnetic ordering [11–14], presence of gi-ant magnetic moments of some doped materials [ ...
Tópico(s): Quantum many-body systems
2013 - Mexican Society of Physics | Revista Mexicana de Física
Shujun Zhu, Xin Zhao, J. H. Hamilton, A. V. Ramayya, W.C. Ma, L.K. Peker, J. Kormicki, Xuhai Hong, W.B. Gao, J. K. Deng, I.Y. Lee, Noah R. Johnson, F. K. McGowan, C. E. Bemis, J. D. Cole, R. Aryaeinejad, G. M. Ter‐Akopian, Yu. Ts. Oganessian,
Nuclei on the neutron rich side of beta stability have long been of interest for nuclear structure studies because they probe different regions of the single particle spectrum and different shell gap combinations for both spherical and deformed shapes. However, such nuclei have been a difficult challenge experimentally. Much information has been gained about the properties of neutron rich nuclei at low spin from the study of radioactive isotopes produced in neutron induced, and more recently, proton ...
Tópico(s): Nuclear physics research studies
1992 - Mexican Society of Physics | Revista Mexicana de Física
Guilherme Portugal, Luísa Moura Branco, A Galrinho, Miguel Mota Carmo, Ana Teresa Timóteo, Joana Feliciano, João Abreu, Sónia Duarte Oliveira, Lurdes Batarda, Rui Cruz Ferreira,
Serial echocardiographic assessment of left ventricular ejection fraction (LVEF) is the gold standard in screening for chemotherapy-induced cardiotoxicity (CIC). Measurement of myocardial deformation using speckle tracking enables more detailed assessment of myocardial contractility. The aim of this study was to determine the relationship between global and regional longitudinal strain and CIC. This was a prospective study of 158 breast cancer patients undergoing chemotherapy with anthracyclines with ...
Tópico(s): Electron
2016 - Elsevier BV | Revista Portuguesa de Cardiologia (English Edition)
Abdelmalek Boumali, Houcine Aounallah,
In this paper, we obtain the exact solutions of Duffin-Kemmer-Petiau equation spin-1 in thepresence of the Aharonov-Bohm and Coulomb potential in the gravitational field of cosmic stringand a global monopole, we are study the DKP equation in commutative space-time, We separatedthe variables with the help of Wigner functions and the parity operator, We solved the system ofthe second order differential equation in the case of P = (−1) j+1 , but in the case of P = (−1) j wesolved the system in j = 0. The spectrum ...
Tópico(s): Noncommutative and Quantum Gravity Theories
2020 - Mexican Society of Physics | Revista Mexicana de Física
Patricia P. Iglesias Sánchez, Carmen Jambrino-Maldonado, Antonio Peñafiel Velasco,
La creación de empresas de base tecnológica en el seno de las universidades, especialmente las Spin-Off universitarias, se ha convertido en los últimos años en uno de los mecanismos más eficaces de transferencia de resultados de investigación y tecnología desde los centros de investigación universitarios al sector productivo. Como consecuencia, esta tipología de empresas está siendo motivo de estudio por el importante papel que se les atribuye en los procesos de innovación, la generación de empleo ...
Tópico(s): Innovation and Knowledge Management
2012 - Elsevier BV | Revista Europea de Dirección y Economía de la Empresa
H N Núñez Yépez, A.L Salas Brito, C. A. Vargas,
Following the pro('edure customarily used to define the four- spin, we define clectric and magnetic ficld four-\'ectors and use them to write Maxwell equations in a manifestly Lorentz covariant formo \Ve prove that these equations are physically equivalent to the standard co- variant formulation oCMaxwel1 <,quations. \Ve th('n 5how how to develop covariant electrodynamics from our set of equations.
Tópico(s): Computational Physics and Python Applications
1988 - Mexican Society of Physics | Revista Mexicana de Física
Şeyma Tülüce Demiray, Uğur BAYRAKCI,
This paper addresses the Heisenberg ferromagnetic spin chain equation with beta time derivative. Integration schemes are used to study this equation. They are generalized Kudryashov method and modified exp -expansion function method. Dark, bright and dark-bright soliton solutions of this equation are procured.
Tópico(s): Nonlinear Photonic Systems
2021 - Mexican Society of Physics | Revista Mexicana de Física