Results 61 to 70 of about 1,372,707 (295)

Influencia personal de los candidatos y competencia espacial en las elecciones presidenciales venezolanas de 2006 a 2013

open access: yesRevista del Instituto Electoral del Estado de México. Apuntes Electorales, 2016
En la presente investigación se justifica la construcción de un modelo de competencia espacial para las elecciones presidenciales venezolanas con base en el número efectivo de partidos y los índices de polarización ponderada y escalar.
Julen Berasaluce Isa   +1 more
doaj  

Behind Valencia: A Contemporary Play [PDF]

open access: yes, 2017
SYNOPSIS The purpose of this play is to highlight the length that modern females go to in order to maintain a desired appearance, especially across social media.
Charbonneau, Emily
core   +1 more source

High Light Utilization and Color Rendering in Vacuum‐Deposited Semitransparent Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal   +9 more
wiley   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

open access: yesAdvanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha   +10 more
wiley   +1 more source

Tetraploidisation is a common phenomenon in apomictic Citrus seedlings affected by genotype and environmental conditions [PDF]

open access: yes, 2009
Citrus species are mainly diploid (2n=2x=18) and very few natural polyploid are encountered in the citrus gene pool. However, several reports of tetraploid seedlings occurrence from apomictic citrus have been done during the last century.
Agusti, Manuel   +6 more
core  

Validity of two Higgs doublet models with a scalar color octet up to a high energy scale

open access: yes, 2017
We have recently studied theoretical constraints on the parameters of a 2HDM augmented with a color-octet scalar. In this paper we consider the consequences of requiring the model to remain valid up to very high energy scales, such as the GUT scale.
Cheng, Li, Valencia, German
core   +1 more source

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

open access: yesAdvanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea   +9 more
wiley   +1 more source

High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

open access: yesAdvanced Materials, EarlyView.
A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza   +11 more
wiley   +1 more source

Edad de adquisición de palabras emocionales en Inglés lengua extranjera: El papel de la enseñanza bilingüe

open access: yesCírculo de Lingüística Aplicada a la Comunicación
Este trabajo investiga a qué edad estudiantes de inglés como lengua extranjera (EFL) adquieren palabras inglesas frecuentes y emocionales (positivas y negativas).
María Jesús Sánchez   +1 more
doaj   +1 more source

PEDRO DE GUEVARA AND TRANSITIONAL FORTIFICATION. THE PLAN FOR THE REFORM OF THE DEFENSES OF VALENCIA, 1544

open access: yesEGA, 2012
In 1544 Pedro de Guevara executed his plan to reform the defenses of Valencia. This is the first “reliable” cartographic representation of the city and constitutes a paradigmatic example of the so-called Transitional Fortification, but also involves the ...
Santiago Lillo Giner   +1 more
doaj   +1 more source

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