Results 121 to 130 of about 131,770 (300)

Highly Tunable and Cell‐Remodelable Thiol‐ene Alginate‐Peptide Crosslinked Hydrogels to Recreate Cellular and Organoid Microenvironments for Biofabrication

open access: yesAdvanced Healthcare Materials, EarlyView.
Norbornene‐functionalized alginate is crosslinked with a di‐thiolated peptide sequence cleavable by cell‐secreted matrix metalloproteinases and decorated with cell‐adhesion peptides upon exposure to UV. Thyroid follicles, endometrial and intestinal organoids are encapsulated in a gentle manner with high cell viability and correct phenotype ...
Julia Fernández‐Pérez   +8 more
wiley   +1 more source

Start, Stop, Rewind, Repeat—Cyclic Exposure of Adipose Stromal Cells‐derived Cartilage Organoids to Chondrogenic and Proliferative Cues to Achieve Scaled‐up and Customizable Bone Formation by Endochondral Ossification

open access: yesAdvanced Healthcare Materials, EarlyView.
This study exploits the plasticity of ASCs‐derived cartilage organoids which generate a perichondrial layer of MSCs when exposed to cyclic chondrogenic/proliferative cues. Using these organoids as building blocks, we develop (i) Phalange Shaped Tissue Engineered Cartilage (Pa‐TECs), recapitulating endochondral ossification suitable for the treatment of
Pablo Pfister   +14 more
wiley   +1 more source

Constraints on income distribution and production efficiency in economies with Ramsey Taxation [PDF]

open access: yes, 2009
We study the link between second-best production efficiency and the constraints on income distribution imposed by private ownership of firms in economies with Ramsey taxation.
Blackorby, Charles, Murty, Sushama
core  

A Tri‐Culture Heart‐on‐a‐Chip Platform With iPSC‐Derived Cardiac Cells for Predictive Cardiotoxicity Testing

open access: yesAdvanced Healthcare Materials, EarlyView.
This study presents the first entirely isogenic heart‐on‐chip, unifying cardiomyocytes, fibroblasts, and endothelial cells from a single iPSC source. The platform reveals a critical biological insight: the endothelium actively shields cardiac tissue from drug‐induced toxicity, challenging the predictive accuracy of conventional, avascular models for ...
Karine Tadevosyan   +12 more
wiley   +1 more source

Iraq's Shadow Economy

open access: yes, 2005
Rivista Internazionale di Scienze Economiche e Commerciali, vol. LII, no. 4, December 2005, pp. 561-579.
openaire   +1 more source

Cost-benefit analysis and the shadow value of government revenue [PDF]

open access: yes, 2003
This paper proves the Hatta (1977) coefficient is the shadow value of government revenue - it is a scaling coefficient that converts efficiency effects from marginal policy changes into dollar changes in utility.
Jones, Chris
core  

PiP‐Plex: A Particle‐in‐Particle System for Multiplexed Quantification of Proteins Secreted by Single Cells

open access: yesAdvanced Materials, EarlyView.
Detecting proteins secreted by a single cell while retaining its viability remains challenging. A particles‐in‐particle (PiPs) system made by co‐encapsulating barcoded microparticles (BMPs) with a single cell inside an alginate hydrogel particle is introduced.
Félix Lussier   +10 more
wiley   +1 more source

DEFINING AND ESTIMATING UNDERGROUND AND INFORMAL ECONOMIES: THE NEW INSTITIONAL ECONOMICS APPROACH [PDF]

open access: yes
A taxonomy of underground economies is elaborated based on the new institutional approach to economic development. Members of formal sectors confront different sets of transformation and transaction costs than do members of informal sectors and these ...
Edgar L. Feige
core  

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