Results 61 to 70 of about 4,829 (259)

Metrology of a Focusing Capillary Using Optical Ptychography

Sensors, 2020
The focusing property of an ellipsoidal monocapillary has been characterized using the ptychography method with a 405 nm laser beam. The recovered wavefront gives a 12.5×10.4μm2 focus.
Xiaojing Huang, Evgeny Nazaretski, Weihe Xu, Dean Hidas, Mark Cordier, Benjamin Stripe, Wenbing Yun, Yong S. Chu   +7 more
doaj   +1 more source

Controlling Intestinal Organoid Polarity using Synthetic Dynamic Hydrogels Decorated with Laminin‐Derived IKVAV Peptides

Advanced Healthcare Materials, EarlyView.
Design rules are presented to control intestinal organoid polarity in fully synthetic hydrogels. The laminin‐derived IKVAV sequence is crucial to obtain correct intestinal organoid polarity. Increasing hydrogel dynamics further supports the growth of correctly polarized intestinal organoids, while a bulk level of stiffness (G’ ≈ 0.7 kPa) is crucial to ...
Laura Rijns, Joost A. P. M. Wijnakker, Victor A. Veenbrink, Riccardo Bellan, Fenna W. B. Craenmehr, Simone I. S. Hendrikse, Johnick F. van Sprang, Wim de Lau, E. W. Meijer, Hans Clevers, Patricia Y. W. Dankers   +10 more
wiley   +1 more source

Ascorbic Acid Modulates Collagen Properties in Glucocorticoid‐Induced Osteoporotic Bone: Insights into Chemical, Mechanical, and Biological Regulation

Advanced Healthcare Materials, EarlyView.
Osteoporosis from long‐term glucocorticoid (GIOP) use elevates susceptibility to fracture. This study shows GCs impair ascorbic acid (AA) metabolism in osteoblasts, collagen synthesis and extracellular matrix integrity. AA enhanced collagen biochemical and mechanical properties and restored osteoblast and endothelial function. These findings underscore
Micaila DE Curtis, Yoontae Kim, Rahul Patil, Xinran Zhang, Meth Jayatilake, Orelle Bulgin, Peter Lialios, Sana Surrency, Soraya Tarrah, Argyris K. Lazaris, Alison Grafton, James Williams IV, Seyedeh Boshra Nouraie, Maria Bizaki, Penelope Xeron, Edward Van Keuren, Jonathan E. Seppala, Evagelia C. Laiakis, Joanna B. Kitlinska, Stella Alimperti   +19 more
wiley   +1 more source

The connection of ellipsoidal and normal heights when applying the collocation method

Geodesy and Cartography, 2012
The prognostic normal heights models compiled by the collocation method are analysed in the article. The elipsoidic heights determined by GPS measurements are used for this case. Systems of equations are applied for prognostic modelling applying polynoms of a relevant order.
Skeivalas, Jonas, Stankevičius, Žilvinas   +1 more
openaire   +3 more sources

Compression‐Tension‐Asymmetry and Stiffness Nonlinearity of Collagen‐Matrigel Composite Hydrogels

Advanced Healthcare Materials, EarlyView.
Self‐assembled collagen hydrogel matrices are widely used in tissue engineering applications. These matrices stiffen and contract laterally under tension due to fiber alignment and soften and collapse under compression due to fiber buckling. It is demonstrated that filler materials, such as Matrigel, linearize the mechanical behavior of collagen ...
David Böhringer, Jan Hinrichsen, Radik Gataulin, Sandra Wiedenmann, Marina Spörrer, Selda Sherifova, Paul Steinmann, Gerhard A. Holzapfel, Ben Fabry, Silvia Budday   +9 more
wiley   +1 more source

On the definition of height reference surfaces over an arbitrary selected area by means of DFHRS approach

Geodesy and Cartography, 2016
The aim of this study is to analyze the best fitting geoid model for an arbitrary selected area of investigation. The Digital Finite Element Height Reference Surface (DFHRS) method, developed by Hochschule Karlsruhe has been chosen to define the height ...
Perparim Ameti, Reiner Jager
doaj   +1 more source

Spherical Skin Model: Stratified Co‐Culture of Fibroblasts and Keratinocytes on Spherical Beads Toward Compound Screening

Advanced Healthcare Materials, EarlyView.
Models of the human skin must combine the relevant biological contents and suitable biomaterials with the correct spatial organization. Performing compound screening on such in vitro models also requires fast and reproducible production methods of the models.
Elisa Lenzi, Nadia Vertti‐Quintero, Julien Husson, Anne‐Laure Bulteau, Carine Nizard, Karl Pays, Sébastien Sart, Charles N. Baroud   +7 more
wiley   +1 more source

Geoid heights in Costa Rica, Case of Study: Baseline Along the Central Pacific Zone

Ingeniería, 2019
A precise orthometric height (H) and orthometric height difference (ΔH) determination is required in many fields like construction, geodesy and geophysics.
Alonso Vega Fernádez, Oscar Lücke Castro, Ph. D., Jaime Garbanzo Leon, M. Sc.   +2 more
doaj   +1 more source

Bioengineered Lymphatic Vessels in Synthetic Matrices to Study Breast Cancer Cell Functions

Advanced Healthcare Materials, EarlyView.
Lymphatic vessels are involved in cancer metastasis. To study the interplay between metastasizing cancer cells and lymphatic vessels under highly reproducible conditions, advanced in vitro models are required. In this work, 3D lymphatic networks are formed in biomimetic hydrogels and their interactions with invasive and non‐invasive cancer cell‐lines ...
Rodi Odabasi, Lisa A. Krattiger, Magdalini Kanari, Mira A. Jacobs, Lukas O. Moser, Mark W. Tibbitt, Cornelia Halin, Martin Ehrbar   +7 more
wiley   +1 more source

DFHRS-based computation of quasi-geoid of Latvia

Geodesy and Cartography, 2013
In geodesy, civil engineering and related fields high accuracy coordinate determination is needed, for that reason GNSS technologies plays important role.
Inese Janpaule, Reiner Jäger Jäger, Ghadi Younis, Jānis Kaminskis, Ansis Zariņš   +4 more
doaj   +1 more source