Browsing INVESTIGACIÓN by Title
Now showing items 1-20 of 1412
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+A 5680-year tree-ring temperature record for southern South America
(PERGAMON-ELSEVIER SCIENCE LTD, 2020)It is widely documented that the Earth's surface temperatures have increased in recent decades. However, temperature increment patterns are not uniform around the globe, showing different or even contrasting trends. Here ... -
A balancing act: how plants integrate nitrogen and water signals
(Oxford University Press, 2020-07-25)Nitrogen (N) and water (W) are crucial inputs for plant survival as well as costly resources for agriculture. Given their importance, the molecular mechanisms that plants rely on to signal changes in either N or W status ... -
A Carbohydrate Moiety of Secreted Stage-Specific Glycoprotein 4 Participates in Host Cell Invasion by Trypanosoma cruzi Extracellular Amastigotes
(FRONTIERS MEDIA SA, 2018)Trypanosoma cruzi is the etiologic agent of Chagas' disease. It is known that amastigotes derived from trypomastigotes in the extracellular milieu are infective in vitro and in vivo. Extracellular amastigotes (EAs) have a ... -
A case report of a primary synovial chondromatosis of temporomandibular joint, producing medial displacement of the articular disc.
(Facultad de Ciencias, 2014)Synovial chondromatosis in the temporomandibular joint (TMJ) is a rare benign cartilaginous metaplasia characterized by the formation of loose bodies within the synovial joint space. This condition presents a specific triad ... -
A characterization for some type-2 fuzzy strong negations
(ELSEVIER, 2020)P. Hernandez et al. in 2014 established the axioms that an operation must fulfill in order to be a negation on a bounded poset (partially ordered set). In this work, we focus on the set L of the membership degrees of the ... -
A clinical predictive score for mood disorder risk in low-income primary care settings
(CIENCIAS, 2013)BACKGROUND: Despite availability of validated screening tests for mood disorders, busy general practitioners (GPs) often lack the time to use them routinely. This study aimed to develop a simplified clinical predictive ... -
A comparative performance analysis of total PSA, percentage free PSA, PSA velocity, and PSA density versus the detection of primary circulating prostate cells in predicting initial prostate biopsy findings in chilean men
(CIENCIAS, 2014)Introduction. PSA parameters have been used in an attempt to improve the diagnostic yield of prostate screening tests; the detection of primary malignant circulating prostate cells (CPCs) may improve the diagnostic yield ... -
A Comparison of Energy Efficiency Certification in Housing: A Study of the Chilean and Spanish Cases
(MDPI, 2019)Faced with implementing policies that seek to improve the energy efficiency of housing and reduce the impact of CO2 emissions, several countries are introducing (unilaterally or by international agreement) energy certification ... -
A decentralized route to the origins of scaling in human language
(IOP PUBLISHING LTD, 2019)Zipf's law establishes that if the words of a (large) text are ordered by decreasing frequency, the frequency versus the rank decreases as a power law with exponent close to -1. Previous work has stressed that this statistical ... -
A dual role for Integrin alpha 6 beta 4 in modulating hereditary neuropathy with liability to pressure palsies
(WILEY, 2018-05)Peripheral myelin protein 22 (PMP22) is a component of compact myelin in the peripheral nervous system. The amount of PMP22 in myelin is tightly regulated, and PMP22 over or under-expression cause Charcot-Marie-Tooth 1A ... -
A functional ferric uptake regulator (Fur) protein in the fish pathogen Piscirickettsia salmonis
(CIENCIAS, 2016)Piscirickettsia salmonis, a Gram-negative fastidious facultative intracellular pathogen, is the causative agent of the salmonid rickettsial septicemia (SRS). The P. salmonis iron acquisition mechanisms and its molecular ... -
A GIS-based framework to identify priority areas for urban environmental inequity mitigation and its application in Santiago de Chile
(ELSEVIER SCI LTD, 2018)Environmental inequity is a common phenomenon of modern cities, particularly in the developing world where the high rates of urbanization often surpass the capacity of local governments to develop proper urban planning. ... -
A HaloTag-TEV genetic cassette for mechanical phenotyping of proteins from tissues
(Nature Publishing Group, 2020-04-28)Single-molecule methods using recombinant proteins have generated transformative hypotheses on how mechanical forces are generated and sensed in biological tissues. However, testing these mechanical hypotheses on proteins ... -
A highly stable black phosphorene nanocomposite for voltammetric detection of clenbuterol
(SPRINGER WIEN, 2018)A nanocomposite was prepared from graphene-like two-dimensional black phosphorene (BP, an allotrope of phosphorus) and nafion (Nf) treated with isopropanol (IP). A glassy carbon electrode (GCE) modified with this nanocomposite ... -
A mechanistic approach for the optimization of loperamide loaded nanocarriers characterization: Diafiltration and mathematical modeling advantages
(ELSEVIER SCIENCE BV, 2018)Oral bioavailability of loperamide is restricted by its limited absorption in the gastrointestinal tract due to its poor aqueous solubility and its P-glycoprotein (Pgp) substrate characteristic. In addition, ammonium ... -
A Multicenter Study Evaluating the Stages of Change in Food Consumption with Warning Labels among Chilean University Students
(HINDAWI LTD, 2020)Objective. To analyze the stage of change in food consumption with warning labels among Chilean university students. Materials and Methods. Cross-sectional study which applied surveys in universities from all over the ... -
A multiple-class distance-decaying approach for mapping temperature reduction ecosystem services provided by urban vegetation in Santiago de Chile
(ELSEVIER SCIENCE BV, 2019)Mapping ecosystem services is a challenging task, particularly for regulating services presenting spatial mismatches between the areas providing the services and those benefiting from them, such as the temperature reduction ... -
A Novel Method to Predict Genomic Islands Based on Mean Shift Clustering Algorithm
(CIENCIAS, 2016)Genomic Islands (GIs) are regions of bacterial genomes that are acquired from other organisms by the phenomenon of horizontal transfer. These regions are often responsible for many important acquired adaptations of the ... -
A Prunus persica genome-wide RNA-seq approach uncovers major differences in the transcriptome among chilling injury sensitive and non-sensitive varieties
(WILEY, 2019)Chilling injury represents a major constrain for crops productivity. Prunus persica, one of the most relevant rosacea crops, have early season varieties that are resistant to chilling injury, in contrast to late season ...