Results 61 to 70 of about 250,447 (236)

Does VAT reduce the instability of tax revenues? [PDF]

In this study, we examine whether or not the adoption of value-added tax (VAT) in developing countries is an effective way of stabilising tax revenues.
Hélène Ehrhart, Christian Ebeke
core   +2 more sources

Bioinspired Adaptive Surfaces for Intelligent Liquid Manipulation: Progressing From Passive and Active to Hybrid Strategies

Advanced Materials, EarlyView.
This review examines passive, active, and hybrid liquid manipulation strategies, highlighting hybrid approaches as an emerging route to reconcile energy efficiency with adaptive control. By actively reconstructing passive surfaces to store programmable interfacial energy, hybrid systems enable flexible yet low‐power liquid transport, with perspectives ...
Jiaqi Miao, Yiyuan Zhang, Liqiu Wang, Alan C. H. Tsang   +3 more
wiley   +1 more source

Spatial Control of Light‐Responsive Proteins and Optogenetics Within Hydrogels via Volumetric Bioprinting

Advanced Materials, EarlyView.
Spatiotemporal control over cell behavior within bioprinted constructs remains a key challenge in biofabrication. Volumetric bioprinting using multi‐wavelength light sources permits to activate light‐sensitive intracellular proteins as well as optogenetic gene and protein expression circuits in bioprinted cells, in addition to enabling fast printing of
Davide Ribezzi, Pere Català, Gabriel Größbacher, Paulina Nuñez Bernal, Olaf Nijssen, Sammy Florczak, Wilco Nijenhuis, Nuria Crusellas‐Villorbina, Bram Nijhoff, Paul Delrot, Jos Malda, Andreas Hierholzer, Martin Fussenegger, Lukas C. Kapitein, Riccardo Levato   +14 more
wiley   +1 more source

3D printing for surgical planning of canine oral and maxillofacial surgeries

3D Printing in Medicine, 2022
Background Advanced diagnostic imaging is an essential part of preoperative planning for oral and maxillofacial surgery in veterinary patients. 3-dimensional (3D) printed models and surgical guides generated from diagnostic imaging can provide a deeper ...
Yu-Hui Huang, Bonnie Lee, Jeffrey A. Chuy, Stephanie L. Goldschmidt   +3 more
doaj   +1 more source

Metastable Polymers for Circular 3D Printing

Advanced Materials, EarlyView.
3D‐printed polymers are usually permanent and hard to recycle. Here, metastable polymers are designed to fall apart on demand. A chemical trigger unzips the printed material back into its original building blocks within minutes at room temperature.
Johannes Markhart, Philipp Mainik, Eva Blasco   +2 more
wiley   +1 more source

Toward Pore‐Engineered 3D‐Printed Materials for Sorption Water Harvesting, Interfacial Evaporation, and Radiative Cooling

Advanced Materials, EarlyView.
Water harvesting, radiative cooling, and interfacial solar evaporation are fundamentally governed by coupled heat, mass, and light transport processes. These processes are mediated by pore architecture, including pore size, connectivity, and hierarchical organization.
Dejan J. Trajkovski, Higgins M. Wilson, Abdallah Y. M. Ali, Jiaxing Xu, Ruzhu Wang, Primož Poredoš   +5 more
wiley   +1 more source

Seamless Mechanical Programming Through Hybrid Epoxy–Acrylate Printing for Soft–Rigid Robots

Advanced Materials, EarlyView.
Hybrid epoxy‐acrylate printing enables seamless fabrication of soft–rigid robotic systems with covalently integrated interfaces and functionally graded mechanics. Grayscale exposure expands the accessible material space, enabling spatially programmed actuation through patterned stiffness while revealing the mechanics and durability of continuously ...
David C. Bershadsky, Franz A. Stolpen, Zachariah A. Page, Lillian Chin   +3 more
wiley   +1 more source

Optimization of hydroxyapatite-PEGDA slurry for vat polymerization: Microstructure and mechanical properties of 3D printed bioscaffolds

Boletín de la Sociedad Española de Cerámica y Vidrio
Vat polymerization has been employed to fabricate porous poly(ethylene glycol) diacrylate (PEGDA)/hydroxyapatite (HA) composite bioscaffolds and ceramic HA bioscaffolds with controlled geometry for bone tissue regeneration.
Liana Mkhitaryan, Lilit Baghdasaryan, Zhenya Khachatryan, Marina Aghayan, Miguel Angel Rodríguez, Viktorya Rstakyan   +5 more
doaj   +1 more source

3D‐Printed Corneal Substitutes: Materials, Fabrication, and Preclinical Progress

Advanced Materials Technologies, EarlyView.
Successful clinical translation of 3D‐printed corneal substitutes relies on the interplay between the bioink properties, cellular component, and the fabrication process. These factors influence the critical properties of the construct, including optical transparency, mechanical stability, suture retention, that ultimately govern long‐term stromal ...
Shadi Moshayedi, Ashley Vazquez, Alexander J. Choi, Dimitrios Karamichos, Jayoung Kim   +4 more
wiley   +1 more source

Chemical structure–property relationships of photocurable monomers/macromers: Potential binder candidates for ceramic/metal vat photopolymerization

Polymer Testing
Successful ceramic/metal vat photopolymerization (VPP) depends on the precise optimization of photocurable polymers to achieve ideal component properties.
Setareh Zakeri, Antonia Ressler, Piie Konnunaho, Teemu Sandblom, Joshua Cunningham, Milla Rinne, Matti Järveläinen, Anastasia Elias, Erkka J. Frankberg, Erkki Levänen   +9 more
doaj   +1 more source