PLANTS WITH USEFUL TRAITS AND RELATED METHODS

The present invention provides methods for obtaining plants that exhibit useful traits by transient suppression of the MSH1 gene of the plants. Methods for identifying genetic loci that provide for useful traits in plants and plants produced with those loci are also provided. In addition, plants that exhibit the useful traits, parts of the plants including seeds, and products of the plants are provided as well as methods of using the plants

Towards a fuller understanding of neurons with Clustered Compositional Explanations

Compositional Explanations is a method for identifying logical formulas of concepts that approximate the neurons' behavior. However, these explanations are linked to the small spectrum of neuron activations (i.e., the highest ones) used to check the alignment, thus lacking completeness. In this paper, we propose a generalization, called Clustered Compositional Explanations, that combines Compositional Explanations with clustering and a novel search heuristic to approximate a broader spectrum of the neurons' behavior. We define and address the problems connected to the application of these methods to multiple ranges of activations, analyze the insights retrievable by using our algorithm, and propose desiderata qualities that can be used to study the explanations returned by different algorithms.Comment: Accepted at NeurIPS 202

INCIDENCIA DE SIGNOS APENDICULARES FRECUENTES Y NO FRECUENTES EN LA APENDICITIS AGUDA

La apendicitis aguda es el padecimiento quirúrgico abdominal más frecuente en el mundo y la principal causa de abdomen agudo, el diagnóstico es principalmente clínico; aunque la mortalidad es inferior al 0.1%, se requiere un diagnóstico oportuno para evitar las posibles complicaciones secundarias al retraso del mismo. Existe numerosa literatura acerca de los signos apendiculares explorados comúnmente, sin embargo existen muy pocas referencias sobre la frecuencia de aparición de otros signos apendiculares en el campo clínicos

Propiedades mecánicas y características microestructurales de los dispositivos del sistema perno-resina en la fortificación de labores mineras

El actual trabajo de investigación tiene el objetivo principal de determinar las características microestructurales, propiedades mecánicas de compresión, tracción del acero, resina y del sistema resina-acero de aplicación en fortificación minera. En el primer capítulo, se precisa la definición del problema que se muestra en la Fortificación minera, ya que es una actividad importante y constituye el pilar de la construcción subterránea, así como de la seguridad, asimismo formulamos los objetivos; tanto general como específicos y la justificación del actual trabajo de investigación. En el segundo capítulo, se detalla una descripción de antecedentes internacionales, nacionales y locales, especificamos el marco teórico, marco conceptual, vinculadas al actual de trabajo de investigación, además contemplamos la hipótesis. En el tercer capítulo, se precisa el tipo de investigación que figura en la actual tesis, además la línea de investigación al cual está dirigida, se presenta la variable dependiente e independiente, y por último se hace referencia a las técnicas e instrumentos de recolección de datos, por lo cual nos dirige a los procedimientos de los ensayos y normas empleadas. En el cuarto y quinto capítulo se describe el análisis de interpretación de resultados en los ensayos, docimasia de hipótesis y anexos (datos de los ensayos)The current research work has the main objective of determining the microstructural characteristics, mechanical properties of compression, traction of steel, resin and the resin-steel system for application in mining fortification. In the first chapter, the definition of the problem that is shown in the Mining fortification, since it is an important activity and constitutes the pillar of underground construction, as well as security, we also formulated the objectives; both general and specific and the justification of the current research work. In the second chapter, a description of international, national and local background is detailed, we specify the theoretical framework, conceptual framework, linked to the current research work, we also contemplate the hypothesis. In the third chapter, the type of research that appears in the current thesis is specified, in addition to the line of research to which it is directed, the dependent and independent variable is presented, and finally reference is made to the techniques and instruments of data collection. Data, which leads us to the test procedures and standards used. The fourth and fifth chapters describe the analysis of the interpretation of results in the tests, contrast of hypotheses and annexes (test data).Tesi

Dust formation in the winds of AGBs: the contribution at low metallicities

We present new models for the evolution of stars with mass in the range 1Msun < M < 7.5Msun, followed from the pre-main-sequence through the asymptotic giant branch phase. The metallicity adopted is $Z=3*10^{-4} (which, with an alpha-enhancement of +0.4, corresponds to [Fe/H]=-2). Dust formation is described by following the growth of dust grains of various types as the wind expands from the stellar surface. Models with mass M>3Msun experience Hot Bottom Burning, thus maintaining the surface C/O below unity. Unlike higher Z models, the scarcity of silicon available in the envelope prevents the formation of silicates in meaningful quantities, sufficient to trigger the acceleration of the wind via radiation pressure on the dust grains formed. No silicate formation occurs below a threshold metallicity of Z=10^{-3}. Low--mass stars, with M< 2.5Msun become carbon stars, forming solid carbon dust in their surroundings. The total dust mass formed depends on the uncertain extent of the inwards penetration of the convective envelope during the Third Dredge--Up episodes following the Thermal Pulses. Carbon grains have sizes 0.08 micron < a_C < 0.12 micron and the total amount of dust formed (increasing with the mass of the star) is M_C=(2-6)*10^{-4}Msun. Our results imply that AGB stars with Z=3*10^{-4} can only contribute to carbon dust enrichment of the interstellar medium on relatively long timescales, > 300 Myr, comparable to the evolutionary time of a 3Msun star. At lower metallicities the scarcity of silicon available and the presence of Hot Bottom Burning even in M< 2Msun, prevents the formation of silicate and carbon grains. We extrapolate our conclusion to more metal--poor environments, and deduce that at Z < 10^{-4} dust enrichment is mostly due to metal condensation in supernova ejecta.Comment: 13 pages, 8 figures, accepted for publication on MNRA

Proposta di utilizzo di metodologie termografiche per il controllo di qualità di componenti meccanici

In base all’esperienza maturata in anni di sperimentazione sull’analisi delle caratteristichemeccaniche dei materiali mediante indagine termografica, nel presente lavoro è proposta una procedura per ilcontrollo di qualità di componenti meccanici in linea di produzione, che è già stata argomento di brevetto.Lo sviluppo di questo lavoro si colloca nell’ambito del progetto FIRB “Sistemi di produzione intelligenti,flessibili e riconfigurabili”. L’attività svolta dal DIIM riguarda il controllo avanzato dell’affidabilità dicomponenti meccanici per l’industria automobilistica. Viene proposta, quindi, la realizzazione di una cella dicontrollo in linea di produzione capace di valutare la presenza di eventuali componenti difettosi attraversol’analisi termica degli stessi, sollecitati secondo un modello predefinito.L’attività, svolta in questa prima fase in laboratorio, è facilmente trasferibile in linea di produzione,considerando la possibilità di realizzare celle di prova in ambiente controllato, con condizioni praticamenteidentiche a quelle di laboratorio, eliminando gli effetti di disturbo che possono influenzare la rispostadell’indagine termografica in ambiente non strutturato

DP: Dialisi Marginale?

Abstract non disponibil