Facultad de Ciencias Físicas y Matemáticas: Recent submissions
Now showing items 4401-4420 of 22118
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(BMC, 2021)Background Syphilis, together with other sexually transmitted infections, remains a global public health problem that is far from controlled. People deprived of liberty are a vulnerable population. Control activities in ...
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(Nature, 2021)Biological activity is often highly concentrated on surfaces, across the scales from molecular motors and ciliary arrays to sessile and motile organisms. These 'active carpets' locally inject energy into their surrounding ...
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(Universidad de Chile, 2021)This dissertation aims to understand how nonvariational effects affect the dynamics of particle-type solutions in spatially extended systems. In the first part of our research, we study nonvariational perturbations on the ...
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(Universidad de Chile, 2021)El objetivo general del presente trabajo de título es evaluar la capacidad de un conjunto seleccionado de modelos de aprendizaje automático para predecir el valor que tendrá el costo por clic (CPC) de los anuncios publicados ...
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(MDPI, 2021)Porphyry Cu-Mo deposits are among the world’s largest source of Cu, Mo, and Re, and are also an important source of other trace elements, such as Au and Ag. Despite the fact that chalcopyrite, bornite, and pyrite are the ...
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(Universidad de Chile, 2021)
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(Universidad de Chile, 2021)
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(Elsevier, 2021)Non-pharmaceutical interventions (NPIs) have played a crucial role in controlling the spread of COVID-19. Nevertheless, NPI efficacy varies enormously between and within countries, mainly because of population and behavioral ...
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(EDP Sciences, 2021)Context. The Centaur (10199) Chariklo has the first ring system discovered around a small object. It was first observed using stellar occultation in 2013. Stellar occultations allow sizes and shapes to be determined with ...
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(EDP Sciences, 2021)The detection of a wide range of substructures such as rings, cavities, and spirals has become a common outcome of high spatial resolution imaging of protoplanetary disks, both in the near-infrared scattered light and in ...
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(Universidad de Chile, 2021)
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(Universidad de Chile, 2021)
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(Universidad de Chile, 2021)
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(Informs, 2021)In the ordinal matroid secretary problem (MSP), candidates do not reveal numerical weights, but the decision maker can still discern if a candidate is better than another. An algorithm alpha is probability-competitive if ...
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(IOP, 2021)As host to two accreting planets, PDS 70 provides a unique opportunity to probe the chemical complexity of atmosphere-forming material. We present ALMA Band 6 observations of the PDS 70 disk and report the first chemical ...
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(Oxford, 2021)In this paper, we consider globally defined solutions of Camassa–Holm (CH)-type equations outside the well-known nonzero-speed, peakon region. These equations include the standard CH and Degasperis–Procesi (DP) equations, ...
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(Red Interamericana de Academias de Ciencias (IANAS), 2019)Mucho se ha avanzado en el conocimiento y protección de la calidad del agua en Chile, pero condiciones hidrológicas y geoquímicas diversas sumadas a presiones del desarrollo urbano, agrícola, industrial y minero hacen ...
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(Springer, 2021)Water quality in Chile is characterized by diverse hydrochemical environments and their interaction with human activities and natural factors. The main water monitoring network is operated by the DGA (Dirección General de ...
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(Elsevier, 2021)This paper describes a study exploring milling and subsequent heat treatments of pure IrO2 and Ta2O5 powders. Reactants were milled under Ar atmosphere in a SPEX 8000D mill, with structural, morphological, and compositional ...
