Results 131 to 140 of about 477,773 (283)

Numerical analysis of thermal performance of various types of horizontal ground heat exchangers

open access: yesAIP Advances
In this paper, three types of horizontal ground heat exchangers (GHEs) such as U-tube, spiral, and slinky were numerically analyzed to investigate their thermal performance in cooling mode for 7 days of continuous operation with specific boundary ...
Nushrat Jahan, Md Hasan Ali, Akio Miyara
doaj   +1 more source

Study on Flow Characteristics of Venturi Accelerated Vortex Drainage Tool in Horizontal Gas Well

open access: yesApplied Sciences
Vortex drainage gas recovery has been used to carry liquid from gas wells. However, the traditional vortex tools in gas wells cannot produce long effective distance spiral flow at a low gas flow rate, and their operating mechanism has not been thoroughly
Hongtao Zhang   +5 more
doaj   +1 more source

Development and test of video systems for airborne surveillance of oil spills [PDF]

open access: yes
Five video systems - potentially useful for airborne surveillance of oil spills - were developed, flight tested, and evaluated. The systems are: (1) conventional black and white TV, (2) conventional TV with false color, (3) differential TV, (4) prototype
Arvesen, J. C.   +2 more
core   +1 more source

Mass Spectrometric Investigation of the Influence of Water Vapour and Oxygen on Gas‐Phase Reactions of Aluminium Acetylacetonate

open access: yesAdvanced Materials Interfaces, EarlyView.
The gas‐phase decomposition of Al(acac)3 is investigated under inert, oxygen, and water‐containing conditions. Water is found to promote selective ligand removal and suppress hydrocarbon formation, while oxygen induces faster, less selective decomposition pathways.
Ilyas Adaköy   +8 more
wiley   +1 more source

Tailoring the Morphology of MoS2 using RF Magnetron Sputtering for Enhanced Photoelectrochemical Water Splitting

open access: yesAdvanced Materials Interfaces, EarlyView.
Tailoring the morphology of MoS2 using RF Magnetron Sputtering for Enhanced Photoelectrochemical Water Splitting. ABSTRACT 2D molybdenum disulfide (MoS2) is a promising material for optoelectronic and photoelectrochemical (PEC) applications due to its unique properties.
Somnath Ladhane   +9 more
wiley   +1 more source

Perfusion Bioreactor Culture Incorporating Mechanical Confinement Enhances Mesenchymal Stem Cell Extracellular Vesicle Production and Wound Healing Potential

open access: yesAdvanced Materials Technologies, EarlyView.
Scalable manufacturing challenges and limited potency remain two of the most intransigent issues limiting clinical translation of EV therapeutics. Mechanical cues can induce phenotypic changes and increased vesiculation in EV source cells without the use of extraneous reagents, chemicals, and/or cargo, thereby potentially drastically improving the ...
Emily H. Powsner   +10 more
wiley   +1 more source

Experimental Investigation of Average Heat-Transfer and Friction Coefficients for Air Flowing in Circular Tubes Having Square-Thread-Type Roughness [PDF]

open access: yes
An investigation of forced-convection heat transfer and associated pressure drops was conducted with air flowing through electrically heated Inconel tubes having various degrees of square-thread-type roughness, an inside diameter of 1/2 inch, and a ...
Sams, E. W.
core   +1 more source

Fabric‐Based Wearable Robotic Exoskeleton Gloves: Advancements and Challenges

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights interdisciplinary technological advances in fabric‐based robotic gloves, focusing on progress in design, fabrication, actuation, sensing, control, and power and energy requirements. It also addresses performance testing and validation, including biomechanical, strength, functional, user experience, and durability assessments, to ...
Ayse Feyza Yilmaz   +2 more
wiley   +1 more source

Experimental Studies on Flow Boiling of R134a in Horizontal Small Tubes

open access: yesZhileng xuebao, 2015
Experimental investigation on the flow boiling of R134a in horizontal mini-channels was carried out in this study. The test sections are three different horizontal smooth stainless steel tubes with inner diameter of 1mm, 2mm and 3mm.
Ding Yang   +5 more
doaj  

Tunable 3D‐Printed Static Mixers for Gradient Bioprinting With High Cell Viability

open access: yesAdvanced Materials Technologies, EarlyView.
ABSTRACT The fabrication of native tissue‐like structures with gradual transitions in material properties, cell types, and growth factors remains a major challenge in biofabrication due to the lack of suitable methods. Mimicking the hierarchical organization of living tissues is essential for functional models, yet creating gradient, multimaterial ...
Florian Hofmann   +9 more
wiley   +1 more source

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