Results 101 to 110 of about 940,212 (283)

Estudio de las técnicas de reducción de dimensión basadas en componentes principales: Análisis de componentes principales no lineales

open access: yes, 2021
figuras, tablas En la estadística multivariada un gran desafío en el manejo correcto de grandes cantidades de datos es el análisis de variables de carácter cuantitativo y cualitativo al mismo tiempo, es decir, análisis de datos mixtos. En lo relacionado al tratamiento de datos solamente cuantitativos existen varias técnicas que ayudan en la reducción ...
openaire   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Análisis cuantitativo del precio de la vivienda en Córdoba [PDF]

open access: yes, 1997
El precio de la vivienda en zonas urbanas se analiza con un enfoque de modelos hedónico, en el que se valoran las características que determinan el precio que adquiere este bien en el mercado.
Brañas Garza, Pablo   +1 more
core  

Quantitative proteomic analysis reveals different characteristics of bladder cancer cells after exposure to bisphenol A

open access: yesFEBS Open Bio, EarlyView.
Bisphenol A (BPA), a common chemical in plastics, exerts dual effects on bladder cancer cells: low doses promote growth and migration, while high doses suppress growth and migration. Multi‐omics and bioinformatics reveal BPA acts via MAPK and inflammatory pathways.
Shaomin Niu   +10 more
wiley   +1 more source

CARACTERIZACIÓN DE PATRONES DE VARIACIÓN MORFOLÓGICA DE LA MYNTHOSTACHYS MEDIANTE MÉTODOS ESTADÍSTICOS MULTIVARIANTE

open access: yesPesquimat, 2014
The main goal of the present study is to make the morphological characterization of the Mynthostachys 's (muña) collected in Cajatambo 's province, by means of statistical multivariant methods.
Doris Gómez Ticerán   +5 more
doaj   +1 more source

Construcción de un índice de vulnerabilidad financiera para el Ecuador [PDF]

open access: yes, 2017
In this article we build a financial vulnerability index for the ecuadorian banking system during the years 2003 to 2016. The methodologies implemented were the equal variance weighting and the principal component analysis. The variables included are the
Reyes Gaibor, Sebastián David
core  

Systemic dysregulation of apolipoproteins in amyotrophic lateral sclerosis serum

open access: yesFEBS Open Bio, EarlyView.
Amyotrophic lateral sclerosis (ALS) is a fatal disease that damages motor neurons. This study found that people with ALS show significant changes in blood fats and the proteins that carry them. Several apolipoproteins were higher, lipid balances were altered, and normal protein–lipid relationships were disrupted.
Finula I. Isik   +6 more
wiley   +1 more source

Modelización de los factores más importantes que caracterizan un sitio en la red

open access: yesRect@, 2004
Mediante el análisis de los datos recogidos en una encuesta realizada durante el último trimestre de 2003 a una muestra de pymes en la región de Murcia, se presentan los resultados obtenidos para identificar los factores que pueden ser considerados más ...
Sánchez García, Juan Francisco   +2 more
doaj  

Determinación cualitativa de los componentes del cemento portland CEM I 52,5-R endurecido [PDF]

open access: yes, 2009
Se pretende contribuir al esclarecimiento de la causa o causas de la importante disminución de la resistencia de las pastas de cemento portland sometidas a altas temperaturas.
Ruiz Mérida, Francisco   +1 more
core  

Natural Products as Geroprotective Modulators in Diabetic Nephropathy: A Mechanistic Framework Integrating Aging Hallmarks and the AMPK–SIRT1–Nrf2 Axis

open access: yesAging and Cancer, EarlyView.
Natural products target the aging kidney in diabetic nephropathy by restoring the AMPK–SIRT1–Nrf2 axis, reducing oxidative stress, inflammation, fibrosis, and cellular senescence while enhancing mitochondrial biogenesis and antioxidant defenses.
Sherif Hamidu   +8 more
wiley   +1 more source

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