scholarly journals Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics

2018 ◽  
Vol 9 (14) ◽  
pp. 3878-3885 ◽  
Author(s):  
Wladek Walukiewicz ◽  
Ignacio Rey-Stolle ◽  
Guifang Han ◽  
Maribel Jaquez ◽  
Danny Broberg ◽  
...  
Keyword(s):  
Native Defect ◽  
Defect Model

On the predictive, quantitative properties of the amphoteric native defect model

2019 ◽  
Vol 34 (10) ◽  
pp. 10LT01 ◽  
Author(s):  
Stefan P Svensson ◽  
Wendy L Sarney ◽  
William A Beck ◽  
Leonardo Hsu ◽  
Wladek Walukiewicz
Keyword(s):  
Native Defect ◽  
Defect Model ◽  
Quantitative Properties

scholarly journals Microchannelled alkylated chitosan sponge to treat noncompressible hemorrhages and facilitate wound healing

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xinchen Du ◽  
Le Wu ◽  
Hongyu Yan ◽  
Zhuyan Jiang ◽  
Shilin Li ◽  
...  
Keyword(s):  
Wound Healing ◽  
Shape Recovery ◽  
Parenchymal Cell ◽  
Gelatin Sponge ◽  
Defect Model ◽  
Liver Parenchymal Cell ◽  
E Coli ◽  
Tissue Integration ◽  
3D Printed

AbstractDeveloping an anti-infective shape-memory hemostatic sponge able to guide in situ tissue regeneration for noncompressible hemorrhages in civilian and battlefield settings remains a challenge. Here we engineer hemostatic chitosan sponges with highly interconnective microchannels by combining 3D printed microfiber leaching, freeze-drying, and superficial active modification. We demonstrate that the microchannelled alkylated chitosan sponge (MACS) exhibits the capacity for water and blood absorption, as well as rapid shape recovery. We show that compared to clinically used gauze, gelatin sponge, CELOX™, and CELOX™-gauze, the MACS provides higher pro-coagulant and hemostatic capacities in lethally normal and heparinized rat and pig liver perforation wound models. We demonstrate its anti-infective activity against S. aureus and E. coli and its promotion of liver parenchymal cell infiltration, vascularization, and tissue integration in a rat liver defect model. Overall, the MACS demonstrates promising clinical translational potential in treating lethal noncompressible hemorrhage and facilitating wound healing.

scholarly journals Functional regeneration and repair of tendons using biomimetic scaffolds loaded with recombinant periostin

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yu Wang ◽  
Shanshan Jin ◽  
Dan Luo ◽  
Danqing He ◽  
Chunyan Shi ◽  
...  
Keyword(s):  
Progenitor Cell ◽  
Transcriptional Profiling ◽  
Collagen Scaffold ◽  
Defect Model ◽  
Tendon Regeneration ◽  
Biomimetic Scaffolds ◽  
Functional Regeneration

AbstractTendon injuries disrupt the balance between stability and mobility, causing compromised functions and disabilities. The regeneration of mature, functional tendons remains a clinical challenge. Here, we perform transcriptional profiling of tendon developmental processes to show that the extracellular matrix-associated protein periostin (Postn) contributes to the maintenance of tendon stem/progenitor cell (TSPC) functions and promotes tendon regeneration. We show that recombinant periostin (rPOSTN) promotes the proliferation and stemness of TSPCs, and maintains the tenogenic potentials of TSPCs in vitro. We also find that rPOSTN protects TSPCs against functional impairment during long-term passage in vitro. For in vivo tendon formation, we construct a biomimetic parallel-aligned collagen scaffold to facilitate TSPC tenogenesis. Using a rat full-cut Achilles tendon defect model, we demonstrate that scaffolds loaded with rPOSTN promote endogenous TSPC recruitment, tendon regeneration and repair with native-like hierarchically organized collagen fibers. Moreover, newly regenerated tendons show recovery of mechanical properties and locomotion functions.

Growth of GaN without Yellow Luminescence

1995 ◽  
Vol 395 ◽  
Author(s):  
X. Zhang ◽  
P. Kung ◽  
D. Walker ◽  
A. Saxler ◽  
M. Razeghi
Keyword(s):  
Vapor Deposition ◽  
Metalorganic Chemical Vapor Deposition ◽  
Deep Level ◽  
Chemical Vapor ◽  
Growth Conditions ◽  
Native Defect ◽  
Yellow Luminescence ◽  
Gallium Vacancy ◽  
Rich Condition

ABSTRACTWe report the growth and photoluminescence characterization of GaN grown on different substrates and under different growth conditions using metalorganic chemical vapor deposition. The deep-level yellow luminescence centered at around 2.2eV is attributed to native defect, most possibly the gallium vacancy. The yellow luminescence can be substantially reduced By growing GaN under Ga-rich condition or doping GaN with Ge or Mg.

scholarly journals Electrosprayed naringin-loaded microsphere/SAIB hybrid depots enhance bone formation in a mouse calvarial defect model

Drug Delivery ◽  
2019 ◽  
Vol 26 (1) ◽  
pp. 137-146 ◽  
Author(s):  
Xue Yang ◽  
Huthayfa N.S Almassri ◽  
Qiongyue Zhang ◽  
Yihui Ma ◽  
Dan Zhang ◽  
...  
Keyword(s):  
Bone Formation ◽  
Calvarial Defect ◽  
Defect Model ◽  
Enhance Bone Formation
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