Results 121 to 130 of about 319,195 (294)

Advanced low-NO(x) combustors for supersonic high-altitude gas turbines [PDF]

, 1977
The impact of gas-turbine-engine-powered aircraft on worldwide pollution was defined within two major areas of contribution. First, the contribution of aircraft to the local air pollution of metropolitan areas and, second, the long-term effects on the ...
Roberts, P. B.
core   +1 more source

Allosteric activation of the nitric oxide receptor soluble guanylate cyclase mapped by cryo-electron microscopy. [PDF]

, 2019
Soluble guanylate cyclase (sGC) is the primary receptor for nitric oxide (NO) in mammalian nitric oxide signaling. We determined structures of full-length Manduca sexta sGC in both inactive and active states using cryo-electron microscopy. NO and the sGC-
Hammel, Michal, Horst, Benjamin G, Hurley, James H, Marletta, Michael A, Morris, Kyle L, Rosenberg, Daniel J, Yokom, Adam L   +6 more
core  

Research on the performance of Cu(X)/SSZ-13 zeolite catalysts with different Cu contents for simultaneous elimination of soot and NO_x

能源环境保护
Diesel engines have been widely applied in heavy industries such as transportation, agriculture, and construction due to their advantages of strong power and durability.
ZHOU Shengran, CHEN Xinyu, GAO Siyu, ZHANG Chunlei, YU Di, WANG Lanyi, YU Xuehua*, ZHAO Zhen*   +7 more
doaj   +1 more source

NO sub x deposited in the stratosphere by the space shuttle, phase 1 [PDF]

The results of calculations to determine the amount of NOx deposited in the stratosphere by space shuttle solid rocket motors (SRM) are presented. Flow properties and chemical composition in the exhaust nozzle and plume were analyzed.
Pergament, H. S., Thorpe, R. D.
core   +1 more source

Hydrogen‐Enriched Microbial Oil Biodiesel With Hybrid Nanoparticles Impact on Diesel Engine Efficiency and Emissions

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study examines a dual‐fuel enhancement strategy that combines hydrogen enrichment with hybrid nanoparticle (HNP) doping. The aim is to improve combustion, performance, and emission characteristics of microbial oil biodiesel (MOB) in compression ignition engines.
D. Premkumar, S. Senthil Kumar, K. R. Padmavathi, Prajith Prabakar   +3 more
wiley   +1 more source

Research on Optimization of Flow Field and Combustion Performance in Boilers With Combined Near‐Wall Air Supply Systems

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In the pulverized coal boiler industry, reducing NOx emissions has become a critical objective. Although low‐NOx combustion technologies are effective, they may lead to localized high‐temperature corrosion. To address this issue, near‐wall air supply technology has been introduced, which involves injecting an appropriate amount of air near the
Wangyongjia Zhong, Lihua Cai, Dianxu Ruan, Haifeng Fang, Xiangfei Lin   +4 more
wiley   +1 more source

Mechanistic Insights Into Photocatalytic Materials for Toxic Pollutants: Environmental Remediation of Personal Care Products

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Photocatalytic materials have emerged as promising solutions for environmental applications due to their ability to degrade organic pollutants under sunlight or artificial light. In this review, recent progress on the photocatalytic materials used for the degradation of pharmaceutical personal care products (PPCPs) in environmental ...
Urvashi Sen, Gunjan Chauhan, Surbhi Soni, Monika Vats, Anand Kumar, Indra Bahadur   +5 more
wiley   +1 more source

The effect of water injection on nitric oxide emissions of a gas turbine combustor burning ASTM Jet-A fuel [PDF]

Tests were conducted to determine the effect of water injection on oxides of nitrogen (NOx) emissions of a full annular, ram induction gas turbine combustor burning ASTM Jet-A fuel.
Diehl, L. A., Marchionna, N. R., Trout, A. M.   +2 more
core   +1 more source

Vitamin C‐Assisted Synthesis of Novel Cu‐SSZ‐13 Zeolite and Its High‐Efficiency Performance in Diesel Vehicle NOx Exhaust Purification

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Diesel vehicle‐derived NOx is a major pollutant, and NH3‐SCR with Cu‐SSZ‐13 is the mainstream abatement technology. In this study, vitamin C (Vc) was used as a crystal growth regulator to successfully synthesize Cu‐SSZ‐13‐Vc0.3 via the hydrothermal method. Experimental results demonstrate that the introduction of Vc significantly optimizes the
Siqi Wu, Xin Yan, Tianyu Li, Tianyi Fu, Yange Hou, Xinyan Zhang, Xin Zhang   +6 more
wiley   +1 more source

Atmospheric effects of stellar cosmic rays on Earth-like exoplanets orbiting M-dwarfs

, 2015
M-dwarf stars are generally considered favourable for rocky planet detection. However, such planets may be subject to extreme conditions due to possible high stellar activity.
Grenfell, J. L., Grießmeier, J. -M., Rauer, H., Tabataba-Vakili, F.   +3 more
core   +3 more sources