Results 21 to 30 of about 277,071 (205)

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Historical pension funds performance and application of a selection criteria based on the probability of loss

open access: yesContabilidad y Negocios: Revista del Departamento Académico de Ciencias Administrativas, 2014
This paper proposes a new methodology for selecting a pension fund base on the probability of loss for its customers. The methodology includes the historical performance of the portfolio between, March 2006 and May 2013, and projects its profitability ...
Juan Carlos Ames Santillán
doaj  

Dividendos, cláusulas contractuales y apalancamiento financiero: un modelo de optimización intertemporal para proyectos de inversión con tasas de descuento cambiantes

open access: yesQuipukamayoc
Objetivo: Determinar la incidencia de la evolución intertemporal de la situación financiera de un proyecto de inversión en la estimación de su rentabilidad. Métodos: Se realizó un estudio cuantitativo de alcance explicativo.
Juan Carlos Ames Santillán
doaj   +1 more source

BASIC ENGINEERING FOR GENERATION PROCESS OF BIOGAS FROM PIG MANURE

open access: yesPublicaciones e Investigación, 2010
The study of this project examines the effectiveness of three treatments biodigestors by means of calculation and analysis of parameters such as chemical oxygen demand, suspended solids, fixed solids, volatile solids, pH, temperature and biogas ...
Julio Cesar Ramírez   +3 more
doaj   +1 more source

Inversiones sostenibles: agroecoturismo.

open access: yesAiBi Revista de Investigación, Administración e Ingeniería, 2020
El turismo rural, es una práctica dirigida a las personas que les agrada el contacto con la naturaleza; incluye diversas eactividades donde los turistas además de descansar, experimentan nuevas situaciones como alojarse en las viviendas campestres ...
Luisa Stella Paz-Montes   +2 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

open access: yesFEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas   +4 more
wiley   +1 more source

De la selva al subsuelo: una lectura comparada del extraheccionismo en Colombia y la República Democrática del Congo en el siglo XXI

open access: yesPolítica Internacional
Este artículo propone un análisis comparativo del fenómeno de la extrahección en Colombia y la República Democrática del Congo, explorando cómo la extracción violenta de minerales estratégicos se articula con estructuras estatales cooptadas, actores ...
Laura Elízabeth Martínez Galindo   +1 more
doaj   +1 more source

Estimación de la fAPAR sobre la Península Ibérica a partir de la inversión del modelo de transferencia radiativa 4SAIL2

open access: yesRevista de Teledetección, 2014
El objetivo de este trabajo consiste en la estimación de la fAPAR en la Península Ibérica a partir de datos MODIS. En primer lugar, se ha simulado un conjunto de datos de reflectividades y de fAPAR a partir de los modelos de transferencia radiativa de ...
B. Martínez   +4 more
doaj   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

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