Repositorio UMAYOR: Envíos recientes
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Use of Fura 2 Fluorescent Dyes as Indicator for Studying Calcium Distribution in Several Plant Tissues
(CIENCIAS, 2010)Calcium (Ca) is an essential plant nutrient and is important in determining quality of fruits in storage. The analytical method presently known to determine Ca concentration in vegetables measures total Ca, and there is a ... -
Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes
(CIENCIAS, 2012)Remote sensors face challenges in characterizing mountain permafrost and ground thermal conditions or mapping rock glaciers and debris-covered glaciers. We explore the potential of thermal imaging and in particular thermal ... -
The genus bipolaris
(CIENCIAS, 2014)The genus Bipolaris includes important plant pathogens with worldwide distribution. Species recognition in the genus has been uncertain due to the lack of molecular data from ex-type cultures as well as overlapping ... -
Vacuum phenomenon in the temporomandibular joint: a clinical, computed tomography and magnetic resonance case report
(CIENCIAS, 2008)A 28-year-old woman presented with a history of clicking and mandibular clenching. She was studied clinically and with axial and coronal CT. The patient was going through a tense emotional period and reported tightening ... -
The effect of spectral and spatial degradation of hyperspectral imagery for the Sclerophyll tree species classification
(CIENCIAS, 2013)Hyperspectral imaging can be a useful remote-sensing technology for classifying tree species. Prior to the image classification stage, effective mapping endeavours must first identify the optimal spectral and spatial ... -
The conserved PFT1 tandem repeat is crucial for proper flowering in Arabidopsis thaliana
(CIENCIAS, 2014)It is widely appreciated that short tandem repeat (STR) variation underlies substantial phenotypic variation in organisms. Some propose that the high mutation rates of STRs in functional genomic regions facilitate evolutionary ... -
The origin and emplacement of Domo Tinto, Guallatiri volcano, Northern Chile.
(CIENCIAS, 2014)El volcán Guallatiri (18°25'S, 69°05'W) es un edificio volcánico ubicado en el Altiplano del norte de Chile, cercano a la frontera con Bolivia. Este volcán, construido en el Pleistoceno-Holoceno en el extremo sur de la ... -
The selective cytotoxicity elicited by phytochemical extract from Senecio graveolens ( Asteraceae) on breast cancer cells is enhanced by hypoxia
(CIENCIAS, 2014)Breast cancer is the second cause of cancer related deaths in woman and the incidence of the disease has increased worldwide, in part due to improvements in early detection. Several drugs with anticancer effects have been ... -
Salivary mucins induce a Toll-like receptor 4-mediated pro-inflammatory response in human submandibular salivary cells: are mucins involved in Sjogren's syndrome?
(CIENCIAS, 2015)Objectives. A hallmark characteristic of SS patients is the ectopic presence of the mucins MUC5B and MUC7 in the extracellular matrix of salivary glands that have lost apical-basolateral acinar-cell polarity. This study ... -
Sjogren's syndrome and the epithelial target: A comprehensive review
(CIENCIAS, 2013)The most difficult component in our understanding of human autoimmunity remains a rigorous dissection of etiological events. Indeed, the vast literature on autoimmune diseases focuses on the inflammatory response, with the ... -
Stages and transitions in the development of tooth brushing skills in children of Mexican immigrant families: a qualitative study
(CIENCIAS, 2015)Objectives: Compared with white children, the oral health of Latino children in the United States is much worse. One factor contributing to oral health is tooth brushing. Few studies have addressed the formation of the ... -
Root Coverage of Multiple Miller Class I and II Recession Defects Using Acellular Dermal Matrix and Tunneling Technique in Maxilla and Mandible: A 1-Year Report
(CIENCIAS, 2015)The objective of the present report was to study the influence of the location (maxilla versus mandible) and class (Miller classification) of gingival recessions on the total root coverage achievement using the tunnel ... -
Social structure in a family group of Guanaco (Lama guanicoe, Ungulate): Is female hierarchy based on 'prior attributes' or 'social dynamics'?
(CIENCIAS, 2013)Social life involves costs and benefits mostly associated with how individuals interact with each other. The formation of hierarchies inside social groups has evolved as a common strategy to avoid high costs stemming from ... -
Routine Prophylaxes Every 3 Months Improves Chronic Periodontitis Status in Type 2 Diabetes
(CIENCIAS, 2014)Background: Periodontitis and type 2 diabetes mellitus (T2DM) are major health problems, especially in low‐income populations with little access to dental care. Low‐cost models for treatment of periodontal disease have not ... -
Seal, replacement or monitoring amalgam restorations with occlusal marginal defects? Results of a 10-year clinical trial
(CIENCIAS, 2015)The aim of this prospective and blind clinical trial was to assess the effectiveness of sealing localized marginal defects of amalgam restoration that were initially scheduled to be replaced. A cohort of twenty six patients ... -
Salivary Urease and ADS Enzymatic Activity as Endogenous Protection against Dental Caries in Children
(CIENCIAS, 2015)The aim of this cross sectional study was to evaluate the ureolytic and arginolytic activities of saliva in children and associate them with their caries status. Study design: 65, 8 year old children, were randomly selected. ... -
Secondary Circulating Prostate Cells Predict Biochemical Failure in Prostate Cancer Patients after Radical Prostatectomy and without Evidence of Disease
(CIENCIAS, 2013)Introduction. Although 90% of prostate cancer is considered to be localized, 20%-30% of patients will experience biochemical failure (BF), defined as serum PSA >0.2 ng/mL, after radical prostatectomy (RP). The presence of ... -
Sealing Composite With Defective Margins, Good Care or Over Treatment? Results of a 10-year Clinical Trial
(CIENCIAS, 2015)PURPOSE: The objective of this study was to clinically evaluate sealed composite restorations after 10 years and compare their behavior with respect to controls. METHODS AND MATERIALS: The cohort consisted of 20 patients ... -
Short- and Long-term Survival after Stroke in Hospitalized Patients in Chile: A Nationwide 5-Year Study
(CIENCIAS, 2013)Background: Short- and long-term stroke survival is a key indicator of hospital performance in stroke care. Our aim was to estimate short-and long-term survival rates in discharged patients diagnosed with ischemic stroke ... -
Severe spontaneous cases of bisphosphonate-related osteonecrosis of the jaws
(CIENCIAS, 2007)A new kind of osteonecrosis has been reported, first in connection with chemotherapy and later with bisphosphonate therapy. Bisphosphonates are used as adjunctive therapy with patients suffering from cancer. The connection ...