1,532 research outputs found
Doe Re Mi: The Unsung Reality of ‘Doe’ Nomenclature
This two-person spoken word piece was written and performed at the University of California, Santa Barbara during the UCSB Womxn’s Ensemble Theatre Troupe’s 2020 production of One Night Stand: A Collection of Feminist Bedtime Stories (a non-profit production of feminist theatre). It is dedicated to Chanel Miller, and all of our fellow survivors everywhere--yesterday, today, and tomorrow
Absorbing boundary conditions for 3D anisotropic media
Seismic methods of subsurface exploration are based on mechanical wave propagation and the numerical modeling of these phenomena is a worthy tool that can be applied as a complement. Since small regions of Earth’s crust are studied, it is necessary to consider absorbing boundary conditions for solving the wave equations efficiently. Therefore, this work presents a derivation of low-order absorbing boundary conditions at the artificial boundaries of the computational domain with the purpose of minimizing spurious reflections. Laboring on a surface S, which separates disturbed and undisturbed regions of the domain, the equations for the absorbing boundary conditons are derived from kinematic conditions, considering continuity of the displacements across S and dynamic conditions, using momentum equations of the wave fronts arriving normally to S and expressions for the strain energy density along S. The arguments to obtain non-reflecting artificial boundaries are carried out for the more general case, through the generalized Hooke’s law. In this way, an isotropic medium is included in this derivation. The performance of these absorbing boundary conditions is illustrated for different models of effective anisotropy -vertically and tilted transversely isotropic media- and, obviously, for isotropic media. The numerical simulations use these absorbing boundary conditions to propagate waves in anisotropic media using an iterative domain decomposition finite element procedure that is implemented in machines with parallel architecture.Publicado en: Mecánica Computacional vol. XXXV, no. 2Facultad de Ingenierí
Absorbing boundary conditions for 3D anisotropic media
Seismic methods of subsurface exploration are based on mechanical wave propagation and the numerical modeling of these phenomena is a worthy tool that can be applied as a complement. Since small regions of Earth’s crust are studied, it is necessary to consider absorbing boundary conditions for solving the wave equations efficiently. Therefore, this work presents a derivation of low-order absorbing boundary conditions at the artificial boundaries of the computational domain with the purpose of minimizing spurious reflections. Laboring on a surface S, which separates disturbed and undisturbed regions of the domain, the equations for the absorbing boundary conditons are derived from kinematic conditions, considering continuity of the displacements across S and dynamic conditions, using momentum equations of the wave fronts arriving normally to S and expressions for the strain energy density along S. The arguments to obtain non-reflecting artificial boundaries are carried out for the more general case, through the generalized Hooke’s law. In this way, an isotropic medium is included in this derivation. The performance of these absorbing boundary conditions is illustrated for different models of effective anisotropy -vertically and tilted transversely isotropic media- and, obviously, for isotropic media. The numerical simulations use these absorbing boundary conditions to propagate waves in anisotropic media using an iterative domain decomposition finite element procedure that is implemented in machines with parallel architecture.Publicado en: Mecánica Computacional vol. XXXV, no. 2Facultad de Ingenierí
Absorbing boundary conditions for 3D anisotropic media
Seismic methods of subsurface exploration are based on mechanical wave propagation and the numerical modeling of these phenomena is a worthy tool that can be applied as a complement. Since small regions of Earth’s crust are studied, it is necessary to consider absorbing boundary conditions for solving the wave equations efficiently. Therefore, this work presents a derivation of low-order absorbing boundary conditions at the artificial boundaries of the computational domain with the purpose of minimizing spurious reflections. Laboring on a surface S, which separates disturbed and undisturbed regions of the domain, the equations for the absorbing boundary conditons are derived from kinematic conditions, considering continuity of the displacements across S and dynamic conditions, using momentum equations of the wave fronts arriving normally to S and expressions for the strain energy density along S. The arguments to obtain non-reflecting artificial boundaries are carried out for the more general case, through the generalized Hooke’s law. In this way, an isotropic medium is included in this derivation. The performance of these absorbing boundary conditions is illustrated for different models of effective anisotropy -vertically and tilted transversely isotropic media- and, obviously, for isotropic media. The numerical simulations use these absorbing boundary conditions to propagate waves in anisotropic media using an iterative domain decomposition finite element procedure that is implemented in machines with parallel architecture.Publicado en: Mecánica Computacional vol. XXXV, no. 2Facultad de Ingenierí
EFFECT OF DIFFERENT STORAGE CONDITIONS ON NUTRITIONAL AND QUALITY PARAMETERS OF 'SWEETHEART' CHERRY.
Abstract
The sweet cherry ‘Sweetheart’, although having a short shelf life, is highly
appreciated by consumers due to its organoleptic characteristics. Different storage
methods were tested to study the maintenance of quality during a period of 27 days: 1)
cold (air at 1°C and 95% relative humidity) (CC), 2) cold and polypropylene film bags
(1°C and 95% relative humidity) (MA) and 3) cold and controlled atmosphere (1°C,
95% RH, 10% CO2 and 8% O2) (CA). Quality parameters tested included external
colour (L*, a*, b*), total soluble solids (TSS), and titratable acidity (TA). To evaluate
nutritional quality anthocyanins, total antioxidant activity, and total phenolics were
measured. Results allow us to say that phenolic compounds were relatively stable and
similar during storage in CC and MA. Cherries stored under CA conditions presented
lowest concentrations of phenolic compounds. Phenolic compounds, total anthocyanins
and antioxidant activity were inversely correlated with values of colour
coordinates. Considering all the evaluations done during this work it is unquestionable
that fruits stored in controlled atmosphere conditions had significantly different
quality
La historia en el Paisaje: diferentes lugares y análogas representaciones. Análisis e interpretación con las nuevas tecnologías de modelización virtual.
Abstract:
In this paper we present new methods of the documentation and registration of the petroglyphs of the exceptional
archaeological site located on Khor Fakkan, emirate of Sharjah, on the east coast of the United Arab Emirates along the
Gulf of Oman, and coordinates 24º59'06.06'' N - 56º20'36.70'' E .The engravings on the surface of the serpentine rock
fragments, of the Semail ophiolite complex that was generated when the Saudí plate was introduced under the IranZagros,
in the Cretaceous, are made with the technique and striped characteristic of the Bronze Age and Iron Age. We
conducted the study respecting its conservation without any intervention on them, using the latest technologies available
and applying at the same time the methodology of landscape archeology. One of the tools we use to analyze is the tablet
EyesMap, a new professional device that allows real-time measurement and 3D modeling of supports. It has two Sony
13 megapixel cameras each, depth sensor, an inertial system and a GNSS system, among other devices. The research
focuses on advanced measurement techniques that allow the virtual reconstruction of the archaeological site and details
of the petroglyphs and fit them in their original landscape to reproduce the environmental conditions in which the authors
of the petroglyphs and their communities lived.
En este artículo presentamos los nuevos métodos de documentación y registro de los petroglifos de un sitio
arqueológico excepcional localizado en Khor Fakkan, en el Emirato de Shrajah, en la costa este de los Emiratos Árabes
Unidos, a lo largo del Golfo de Omán y cuyas coordenadas geográficas son 24º59'06.06'' N - 56º20'36.70'' E. Los
grabados, en la superficie de fragmentos de roca serpentina del complejo ofiolítico Semail, que fue generado cuando la
placa Saudí se introdujo bajo la Irán-Zagros, durante el Cretácico, se realizaron con técnicas y estilos propios de la Edad
del Bronce y del Hierro. Llevamos a cabo su estudio respetando su perfecta conservación y sin ningún tipo de
intervención sobre ellos, utilizando las ultimas tecnologías disponibles y aplicando, a la vez, la metodología de la
arqueología del paisaje. Una de las herramientas que utilizamos para analizarlos es la tablet EyesMap, un nuevo
dispositivo profesional que permite la medición en tiempo real y el modelado 3D de los soportes. Posee dos cámaras
Sony de 13 megapíxeles cada una, un sensor de profundidad, un sistema inercial y un sistema GNSS, entre otros
dispositivos. La investigación se centra en las técnicas de medición avanzadas que permiten hacer la reconstrucción
virtual del emplazamiento arqueológico y de los detalles de los petroglifos y encajarlos en su paisaje original para
reproducir las condiciones ambientales en las que vivían los autores de los petroglifos y sus comunidades
First record of feather-loss disorder in Antarctic penguins
Little is known about diseases affecting Antarctic wildlife (Kerry & Riddle 2009). Understanding the patterns, causes and effects of disease in these populations is crucial as many of these species are already threatened by rapid environmental changes brought about by climate change and increases in human activity. Although Antarctic penguins are one of the best studied organisms on the continent in terms of health, the published information is also scarce and fragmented (Barbosa & Palacios 2009). This paper reports for the first time, a new disease present in Antarctic penguins, the feather-loss disorder. The feather-loss disorder is characterized by premature loss of feathers resulting in exposed skin.In penguins, the disorder was first observed in African penguin (Spheniscus demersus (L)) chicks, both in captivity and the wild in 2006 and 2008, respectively, and in Magellanic penguins (S. magellanicus (Forster, 1781)) in 2007 (Kane et al. 2010). The cause is still uncertain but avian polyomavirus, the beak and feather disease virus or a bacterial pathogen have been proposed as potential agentsFil: Barbosa, Andrés. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales. Departamento de Ecología Evolutiva; EspañaFil: Colominas Ciuró, Roger. Consejo Superior de Investigaciones Científicas; España. Museo Nacional de Ciencias Naturales. Departamento de Ecología Evolutiva; EspañaFil: Coria, Néstor Rubén. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Centurión, Mara. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Sandler, Rosana Veronica. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Negri, Agustina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Santos, Mercedes. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentin
Untangling the Cooperative Role of Nuclear Receptors in Cardiovascular Physiology and Disease.
The heart is the first organ to acquire its physiological function during development, enabling it to supply the organism with oxygen and nutrients. Given this early commitment, cardiomyocytes were traditionally considered transcriptionally stable cells fully committed to contractile function. However, growing evidence suggests that the maintenance of cardiac function in health and disease depends on transcriptional and epigenetic regulation. Several studies have revealed that the complex transcriptional alterations underlying cardiovascular disease (CVD) manifestations such as myocardial infarction and hypertrophy is mediated by cardiac retinoid X receptors (RXR) and their partners. RXRs are members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors and drive essential biological processes such as ion handling, mitochondrial biogenesis, and glucose and lipid metabolism. RXRs are thus attractive molecular targets for the development of effective pharmacological strategies for CVD treatment and prevention. In this review, we summarize current knowledge of RXR partnership biology in cardiac homeostasis and disease, providing an up-to-date view of the molecular mechanisms and cellular pathways that sustain cardiomyocyte physiology.This research was funded by the Ministerio de Ciencia, Innovacion y Universidades (MCNU) (SAF2017-90604-REDT-NurCaMeIn, RTI2018-095928-BI00) and the Comunidad de Madrid (MOIR-B2017/BMD-3684) to MR; the MCNU fellowship (BES-2016-076632) to AP; CNIC Master fellowship to RS-C. The CNIC is supported by the MCNU and the Pro CNIC Foundation.S
Criterios jurídicos que garantizan la correcta aplicación de las convenciones probatorias en el proceso penal peruano
La presente investigación pretende determinar cuáles son los criterios jurídicos que
garantizan la correcta aplicación de las Convenciones Probatorias en el proceso penal
peruano, siendo éste su objetivo general; pues en la actualidad, el ordenamiento jurídico tiene
una escasa regulación respecto a esta institución jurídica.
En ese sentido, la hipótesis planteada radica en que los criterios jurídicos que garantizan su
correcta aplicación son: el cumplimiento de las normas imperativas expresamente reguladas;
que versen sobre hechos secundarios y no principales; que no impidan alcanzar el fin del
proceso penal y que no se afecte el derecho a la defensa.
Por ello, se ha empleado el diseño no experimental o descriptivo, y mediante la técnica de
análisis sobre la regulación de las convenciones probatorias en la legislación comparada y de
casos prácticos ilustrativos vinculados a la necesidad de la existencia de criterios reguladores
de estas situaciones, se ha podido concluir que los criterios jurídicos que garantizan su
correcta aplicación son los planteados en la hipótesis , por lo que se ha llegado a confirmar
esta misma, siendo que se recomienda que el juez , al ser el encargado de la aprobación de las
convenciones probatorias debe emplear criterios jurídicos con los que evalúen correctamente
dichos acuerdos entre las partes.The present investigation intends to determine which legal criteria guarantee the correct
application of the Probatory Conventions in the Peruvian criminal process, this being its
general objective; because at present, the legal system has little regulation regarding this legal
institution.
In this sense, the proposed hypothesis is that the legal criteria that guarantee its correct
application are: compliance with expressly regulated mandatory standards; that deal with
secondary and non-main facts; that they do not prevent reaching the end of the criminal
process and that the right to defense is not affected.
For this reason, the non-experimental or descriptive design has been used, and through the
technique of analysis on the regulation of evidentiary conventions in comparative legislation
and of illustrative case studies linked to the need for the existence of regulatory criteria for
these situations, has been able to conclude that the legal criteria that guarantee its correct
application are those raised in the hypothesis, for which it has come to confirm this, being
that it is recommended that the judge, being in charge of the approval of the evidentiary
conventions, should use legal criteria with which they correctly evaluate said agreements
between the partiesTesi
Fundamentos que justifican la regulación de la disolución lata de una sociedad como consecuencia de la pérdida de pluralidad de socios
La presente investigación ha pretendido determinar cuáles son los fundamentos para regular en
la ley general de sociedades la disolución lata de una sociedad como consecuencia de la pérdida
de pluralidad mínima de socios y éste ha sido su objetivo general, pues la ley general de
sociedades, contempla como efectos jurídicos, su disolución de pleno derecho y su conversión
en una sociedad irregular.
Además, la hipótesis de esta investigación es que, los fundamentos para regular en la ley
general de sociedades la disolución lata de una sociedad como consecuencia de la pérdida de
pluralidad mínima de socios, son, entre otros, la naturaleza contractual de las sociedades y la
prevalencia de la aplicación del principio de conservación de la sociedad.
Por ello, se ha empleado el diseño no experimental y mediante la técnica de análisis documental
sobre la doctrina y legislación peruana, acompañadas de las Resoluciones del Tribunal
Registral, vinculadas a la pérdida de la pluralidad mínima de socios, y mediante el estudio de
la legislación y doctrina de otros países como Argentina, España y Chile, se ha obtenido como
resultado que es necesaria la regulación de la disolución lata en la ley general de sociedades, y
que sus fundamentos son la naturaleza contractual de las sociedades, la prevalencia de la
aplicación del principio de conservación de la sociedad y que el derecho societario no es
sancionador, en ese sentido, se concluye que es necesario modificar la ley antes referida, en
sus artículos 4° y 407°, para incorporar la institución jurídica de la DISOLUCIÓN LATA, a
fin de brindar una alternativa a éstas empresas, para permanecer en el mercado; siendo que se
recomienda que las modificaciones y regulación de instituciones nuevas como la disolución
lata y las sociedades unipersonales, tienen que ser compatibles con la realidad empresarial y
social de cada país.The present investigation has tried to determine what are the bases to regulate in the general
law of companies the can dissolution of a company as a consequence of the loss of minimum
plurality of partners and this has been its general objective, since the general law of companies,
contemplates as legal effects, its dissolution of full right and its conversion into an irregular
society.
In addition, the hypothesis of this research is that, the bases to regulate in the general law of
companies the can dissolution of a company as a consequence of the loss of minimum plurality
of partners, are, among others, the contractual nature of the companies and the prevalence of
the application of the principle of conservation of society.
For this reason, the non-experimental design has been used and through the technique of
documentary analysis on the Peruvian doctrine and legislation, accompanied by the
Resolutions of the Registry Court, linked to the loss of the minimum plurality of partners, and
through the study of the legislation and doctrine of other countries such as Argentina, Spain
and Chile.For what has been obtained as a result that the regulation of can dissolution is
necessary in the general law of companies, and that its foundations are the contractual nature
of the companies, the prevalence of the application of the principle of conservation of the
company and that Corporate law is not sanctioning, in that sense, it is concluded that it is
necessary to modify the aforementioned law, in its articles 4 and 407, to incorporate the legal
institution of LATA DISSOLUTION, in order to provide an alternative to these companies , to
stay in the market; being that it is recommended that the modifications and regulation of new
institutions such as the canned dissolution and sole proprietorship, have to be compatible with
the business and social reality of each countryTesi
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