Results 131 to 140 of about 268,124 (290)

Bioprinted Constructs in the Regulatory Landscape: Current State and Future Perspectives

open access: yesAdvanced Materials, EarlyView.
Bioprinting has rapidly emerged as a transformative technology in biomedical research, offering unprecedented potential to replicate complex tissues. Despite its promise, clinical translation remains limited due to regulatory hurdles. This review explores global regulatory frameworks, comparing approaches in the EU, U.S., China, and Australia, and ...
Francesca Perin   +6 more
wiley   +1 more source

Synthesis of chiral 2-methyl-5,6,7,8-tetrahydroquinolines from naturally occurring monoterpenes [PDF]

open access: yes, 2004
The synthesis is reported of chiral substituted 2-methylpyridines, in which the pyridine rings are annulated at the 5,6-positions to the chiral frameworks originating from (-)-β-pinene, (-)-isopinocampheol and (+)-camphor.
Chelucci, Giorgio Adolfo   +2 more
core  

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

open access: yesAdvanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska   +10 more
wiley   +1 more source

Delayed Gastric Emptying Neither Contributes to Gastroesophageal Reflux nor Disease Severity in Patients With Respiratory Disease

open access: yesGastro Hep Advances
Background and Aims: Gastroesophageal reflux (GER) is common and thought to contribute to disease progression in patients with respiratory disease. Delayed gastric emptying (DGE) can increase GER in patients with GER disease, but its effect in patients ...
Jessica Bradley   +7 more
doaj   +1 more source

4D Bioprinted Self‐Folding Scaffolds Enhance Cartilage Formation in the Engineering of Trachea

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
A bilayer self‐folding scaffold, triggerable by humidity, is fabricated via 4D bioprinting for trachea engineering. An analytical model is derived to predict its radius of curvature, enabling its scalability. Cartilage progenitor cells seeded on the scaffold perceive scaffold final curvature and react to it, by enhancing the upregulation of pro ...
Irene Chiesa   +4 more
wiley   +1 more source

Correlation of gastroesophageal reflux disease with positive family history and headache in Shiraz city, Southern Iran

open access: yesThe Saudi Journal of Gastroenterology, 2007
Background/Aims: To analyze the potential correlation of a positive family history of gastroesophageal reflux disease (GERD) and the history of headaches as a risk factor for and complication of the disease.
Saberi-Firoozi Mehdi
doaj  

Food‐Based Edible Wireless Sensing Device with Isotropic Electromagnetic Response for Gastrointestinal Monitoring

open access: yesAdvanced Materials Technologies, EarlyView.
A sensor is fabricated that reflects electromagnetic waves wirelessly using only edible materials. The substrate is made of edible materials such as sugar and starch, and the electrodes are made of gold. This sensor has isotropic electromagnetic wave characteristics in response to rotation.
Ryosuke Matsuda   +5 more
wiley   +1 more source

Kidney Ultrasonography and Dimercaptosuccinic Acid Scans for Revealing Vesicoureteral Reflux in Children With Pyelonephritis: A 7-Year Prospective Cohort Study of 1500 Pyelonephritic Patients and 2986 Renal Units [PDF]

open access: hybrid, 2011
Masoumeh Mohkam   +9 more
openalex   +1 more source

Recyclable and Binder‐Free EGaIn–Carbon Liquid Metal Composite: A Sustainable Approach for High‐Performance Stretchable Electronics, Thermal‐Interfacing and EMI‐Shielding

open access: yesAdvanced Materials Technologies, EarlyView.
Binder‐free EGaIn–CB composite deliver printable, recyclable liquid‐metal conductors without sintering or polymer binders. Only 1.5 wt% CB yields shear‐thinning, high‐viscosity rheology, ∼60% bulk EGaIn conductivity, robust stretchability, high thermal conductivity, and strong EMI shielding (35 → 70 dB at 100% strain).
Elahe Parvini   +4 more
wiley   +1 more source

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