Results 81 to 90 of about 9,538 (308)

Propulsion Risk Reduction Activities for Non-Toxic Cryogenic Propulsion [PDF]

open access: yes, 2010
The Propulsion and Cryogenics Advanced Development (PCAD) Project s primary objective is to develop propulsion system technologies for non-toxic or "green" propellants.
Fisher, Kenneth   +2 more
core   +1 more source

Microneedle Technology in Psoriasis Management: Mechanistic Insights, Technological Innovation, Clinical Progress, and Challenges

open access: yesAdvanced Healthcare Materials, EarlyView.
This review explores the evolving role of microneedle systems in psoriasis management, highlighting their potential for enhanced drug delivery, diagnosis, and disease monitoring. It also discusses unmet clinical needs for psoriasis management and technical challenges, while outlining strategic directions to advance microneedle integration into routine ...
Fatma Moawad   +3 more
wiley   +1 more source

Dynamics of electrically controlled propellant valves for “green”-propellant thrusters

open access: yesTechnical mechanics
Recently, the leading space countries have paid much attention to searching for and using new types of untoxic “green” propellants. Developments of 0.1 N to 220 N “green”-propellant thrusters have been reported, and some of them have been successfully tested in flight conditions.
openaire   +1 more source

Feasibility of obtaining hypervelocity acceleration using propellant lined launch tubes Final report, 27 Sep. 1966 - 5 May 1970 [PDF]

open access: yes
Feasibility of explosive lining in launch tube for hypervelocity projectile ...
Rodenberger, C.   +2 more
core   +1 more source

Oxygen and ROS Delivery for Infected Wound Healing and Future Prospects

open access: yesAdvanced Healthcare Materials, EarlyView.
Bacterial infection is a major driver of delayed wound healing and postsurgical readmissions; with rising antibiotic resistance, solid peroxide–releasing biomaterials offer sustained delivery of ROS/O2 for antimicrobial control and microenvironmental modulation.
Ayden Watt   +7 more
wiley   +1 more source

Surface modification of ammonium nitrate by coating with surfactant materials to reduce hygroscopicity

open access: yesDefence Technology, 2019
Ammonium nitrate (AN) is promising oxidizer in green propellants. In this work, the physical coating method was improved to modify the surface of ammonium nitrate particles with different surfactant materials to reduce hygroscopicity.
Baha I. Elzaki, Yue Jun Zhang
doaj   +1 more source

Towards the Development of Low Power Arcjet for Use with Green Propellant [PDF]

open access: yes
Conventional arcjet propellants are hydrazine and ammonia. Both are toxic and environmentally unfriendly, requiring the use of complicated handling logistics and increased cost.
Moeller, Trevor M.
core   +1 more source

The clinical effectiveness and cost-effectiveness of inhaler devices used in the routine management of chronic asthma in older children: a systematic review and economic evaluation [PDF]

open access: yes, 2002
Background: This review examines the clinical effectiveness and cost-effectiveness of hand-held inhalers to deliver medication for the routine management of chronic asthma in children aged between 5 and 15 years.
Beverley, C.   +4 more
core   +1 more source

Nb2C‐Reinforced Hydrogel Microneedle as Dual ROS‐Scavenging Platform to Promote Diabetic Wound Healing

open access: yesAdvanced Healthcare Materials, EarlyView.
An advanced microneedle patch integrating niobium carbide nanosheets and curcumin is engineered for diabetic wound healing. The system enables dual ROS scavenging and NIR‐enhanced antimicrobial activity, effectively rebalancing the oxidative microenvironment, promoting macrophage repolarization and angiogenesis, and accelerating full‐thickness wound ...
Zhi Zheng   +12 more
wiley   +1 more source

Advanced techniques for determining long term compatibility of materials with propellants [PDF]

open access: yes
A method for the prediction of propellant-material compatibility for periods of time up to ten years is presented. Advanced sensitive measurement techniques used in the prediction method are described.
Green, R. L.   +3 more
core   +1 more source

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