Results 121 to 130 of about 893,424 (292)

Are Real GDP Levels Trend, Difference, or Regime-Wise Trend Stationary? Evidence from Panel Data Tests Incorporating Structural Change [PDF]

open access: yes
The unit root hypothesis for international real GDP and real GDP per capita has been the subject of extensive investigation. Using panel methods that incorporate structural change, we reject the unit root null in favor of the alternative of trend ...
David H. Papell, Natalie Hegwood
core  

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

On null subjects and null objects in generative grammar

open access: yesling, 1995
L'A. presente un examen critique des analyses generatives concernant le sujet nul et l'objet nul, et indique, a travers des donnees provenant de langues genetiquement sans rapport et structurellement diverses, que leurs conditions d'autorisation et d'identification restent completement isolees, et qu'il se peut qu'un seul ou plusieurs parametres ...
openaire   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Null and Overt Subjects in the Acquisition of Modern Standard Arabic as a First Language by Bilingual Moroccan Children

open access: yesПсихолінгвістика
Goal. In Modern Standard Arabic (MSA), the subject can be null or overt, occurring preverbally (VSO) and postverbally (SVO). The current acquisitional study presents results from picture description task with 24 Moroccan child learners of MSA (aging ...
Халід Лахбібі   +1 more
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Simple Wald tests of the fractional integration parameter : an overview of new results [PDF]

open access: yes
This paper presents an overview of some new results regarding an easily implementable Wald test-statistic (EFDF test) of the null hypotheses that a time-series process is I(1) or I(0) against fractional I(d) alternatives, with d?(0,1), allowing for ...
Jesus Gonzalo   +2 more
core  

Microporous Microgel Assemblies Facilitating the Recruitment and Osteogenic Differentiation of Progenitor Cells for Bone Regeneration

open access: yesAdvanced Functional Materials, EarlyView.
There is a significant need for biomaterials with well‐defined stability and bioactivity to support tissue regeneration. In this study, we developed a tunable microgel platform that enables the decoupling of stiffness from porosity, thereby promoting bone regeneration.
Silvia Pravato   +9 more
wiley   +1 more source

Testing a parametric model against a nonparametric alternative with identification through instrumental variables [PDF]

open access: yes
This paper is concerned with inference about a function g that is identified by a conditional moment restriction involving instrumental variables. The paper presents a test of the hypothesis that g belongs to a finite-dimensional parametric family ...
Joel Horowitz
core  

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