Results 61 to 70 of about 400,764 (338)

Shape‐Morphing Nanoengineered Hydrogel Ribbons as Hemostats

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a self‐assembling, shape‐morphing nanoengineered hydrogel ribbon system that rapidly forms porous aggregates in situ for efficient hemostasis in trauma and surgical applications. Abstract Rapid and effective hemorrhage control remains a major challenge in trauma and surgical care, particularly for complex or noncompressible wounds.
Ryan Davis Jr   +9 more
wiley   +1 more source

Complicated duodenal perforation in children: Role of T-tube

open access: yesAfrican Journal of Paediatric Surgery, 2022
Background: Diagnosis of duodenal perforation (DP) in children is often delayed. This worsens the clinical condition and complicates simple closure. Objectives: To explore the advantages of using T-tube in surgeries for DP in children.
Rupesh Keshri   +6 more
doaj   +1 more source

Model predictive control for current balancing in a four-phase buck converter [PDF]

open access: yes, 2016
Multiphase buck topology offers smaller ripple current and lower component ratings. This, however, compromises unbalanced output current between each phase of an inductor which leads to over-current and inductor saturation issues.
A. F. Yahaya, Jabbar, Mansor, Muhamad
core  

Coordination of Foliar and Wood Anatomical Traits Contributes to Tropical Tree Distributions and Productivity along the Malay-Thai Peninsula [PDF]

open access: yes, 2009
Drought is a critical factor in plant species distributions. Much research points to its relevance even in moist tropical regions. Recent studies have begun to elucidate mechanisms underlying the distributions of tropical tree species with respect to ...
Baltzer, Jennifer L.   +4 more
core   +2 more sources

An Ionic Gelation Powder for Ultrafast Hemostasis and Accelerated Wound Healing

open access: yesAdvanced Functional Materials, EarlyView.
An ultrafast ionic gelation‐activated hemostatic powder (AGCL) forms a hydrogel within ≈1 s upon contact with blood‐derived calcium ions. The AGCL powder enables rapid hemorrhage control, strong tissue adhesion, and enhanced healing. The powder's pre‐crosslinked polymer network ensures high blood uptake and stability, offering effective treatment for ...
Youngju Son   +12 more
wiley   +1 more source

Enhancement of Natural Convection Heat Transfer from a Fin by Circular Perforations

open access: yesZhileng xuebao, 2012
Heat transfer enhancement from a horizontal rectangular fin embedded with circular perforations under natural convection is studied. Through the experiment and simulation, the heat dissipation power of different perforated numbers was compared to the ...
Jing Wenjuan   +3 more
doaj  

Mystery of the lost gallstone‐Part 2

open access: yesClinical Case Reports, 2020
If gallbladder perforation occurs during cholecystectomy, every spilled gallstone should be retrieved to minimize possible late gallstone‐related complications.
Konstantinos A. Boulas   +5 more
doaj   +1 more source

Histological and Histomorphometric Evaluation of Applying a Bioactive Advanced Platelet-Rich Fibrin to a Perforated Schneiderian Membrane in a Maxillary Sinus Elevation Model

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
BackgroundSchneiderian membrane (SM) perforation is a major complication of maxillary sinus elevation with simultaneous bone grafting, yet under this scenario there is no standard biomaterial that maximizes favorable tissue healing and osteogenic effects.
Liangjing Xin   +5 more
doaj   +1 more source

A Patient‐Specific 3D Printed Carotid Artery Model Integrating Vascular Structure, Flow, and Endothelium Responses

open access: yesAdvanced Healthcare Materials, EarlyView.
This study introduces the first miniaturized, patient‐specific carotid artery model created via 3D printing using GelMA with embedded vascular cells. Combining CFD, PIV, and flow perfusion, the model replicates anatomically dependent hemodynamics and cellular responses.
Jorge A. Catano   +7 more
wiley   +1 more source

Laparoscopic repair of intra-abdominal bladder perforation in preschool children

open access: yesJournal of Minimal Access Surgery, 2017
Intraperitoneal bladder rupture is uncommon in very young children, but its incidence may increase with increasing use of seat and lap belts. To the best of our knowledge, there are no prior reports of laparoscopic repair of this injury in children.
Aniruddh V Deshpande   +2 more
doaj   +1 more source

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