Results 131 to 140 of about 10,667,646 (310)

Evolución de las pérdidas de amoníaco desde urea aplicada en otoño y primavera a una pastura de agropiro alargado (Thinopyrum ponticum)

RIA: Revista Investigaciones Agropecuarias, 2003
La fertilización nitrogenada con urea en pasturas de agropiro (Thinopyrumponticum) incrementa la producción de materia seca; sin embargo, la eficienciade utilización del nitrógeno (N) no es elevada, consecuencia probablemente dela volatilización de ...
P. A. Barbieri, H.E. Echeverría
doaj  

Les composites moléculaires bidimensionnels [NH3-(CH2)n-NH3] MX4 . Incidence structurale du paramètre n et de la nature du métal (M = Cd, Mn, Pb, Cu, Pd).

, 1996
Ce travail porte sur une série de composés organo-métalliques de structure bidimensionnelle et de formulegénérale [NH3-(CH2)n-NH3] MX4 (notée 2CnMX4) où M est un métal (M = Cd, Mn, Pb, Cu, Pd), X unhalogène (X = Cl, Br) et 1 £ n £ 12.
Maris, Thierry
core  

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems

Advanced Science, EarlyView.
Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li, Corin T. Scott, Taku Suzuki‐Osborne, John P. Lowe, Dominic Taylor, Mariolino Carta, Neil B. McKeown, Andrew D. Burrows, Lucia H. Mascaro, Frank Marken   +9 more
wiley   +1 more source

海水盐度对完全混合活性污泥法氨氮去除率的影响研究

Gongye shui chuli, 2000
采用完全混合活性污泥法研究了大生活用海水进入城市污水系统后,海水盐度对曝气池中NH3—N去除率的影响,同时研究了不同海水盐度下,温度、pH值的变化对NH3—N去除率的影响。实验结果表明,污水中海水占 1 2 %时,对曝气池中NH3—N的去除率无太大影响;但是当提高到 2 4 %时,NH3—N去除率有所降低;海水盐度达 36%时,NH3—N去除率明显降低。温度的升高,有利于去除NH3—N,尤其是高海水盐度下,温度的影响更为明显。海水存在时,脱除氨态氮的最适宜pH值为 8 0～ 8 5。
王静, 张雨山, 徐梅生
doaj  

Multi‐Enzyme Mimetic Molybdenum Nitride Nanozymes Reshape Subgingival Microenvironment for Synergistic Periodontitis Therapy via ROS Regulation and Microbiome Remodeling

Advanced Science, EarlyView.
ABSTRACT Periodontitis, a chronic inflammatory disease initiated and sustained by plaque microorganisms and host immune response, remains an intractable oral disease and a leading cause of tooth loss worldwide. Traditional mechanical debridement and adjunctive antibiotic or antiseptic therapy often shows limited efficacy due to the complex anatomical ...
Weiyu Zhang, Zhongwei Yang, Yunfan Zhang, Longwei Wang, Xiaoyu Zhang, Jiahui Mao, Yizhi Dai, Yifan Yuan, Mingge Wang, Xin Yang, Xin Yu, Jing Liu, Chunying Chen   +12 more
wiley   +1 more source

Reduction in N2O and NH3 emissions with combined use of dual inhibitors and biochar in a tea field soil in subtropical central China

Biochar
Excessive nitrogen (N) fertilization in tea plantations often leads to substantial nitrous oxide (N2O) emissions, which exacerbate global warming, and to pronounced ammonia (NH3) volatilization, which is closely associated with air pollution and aquatic ...
Yuefeng Li, Yanyan Li, Haifeng Zhang, Qiyuan Liao, Huixiu Zhan, Chengli Tong, Yong Li, Jinshui Wu, Jianlin Shen   +8 more
doaj   +1 more source

Characteristics of R134a/R410A Cascade Heat Pump and Optimization

, 2012
Single stage air source heat pump has been widely used around the world. However, it has some drawback, for example, deteriorated heating capacity and COP in cold ambient temperature.
Kim, Min Soo, Kim, Dong Ho, Park, Han Saem   +2 more
core  

Temperature-dependent Plasma Chemistry of NH3 Cracking: Kinetic Study with Experiments and Numerical Simulations

In light of the undeniable transition toward a carbon-neutral energy system, ammonia (NH3) is considered one of the most promising hydrogen carriers.
Seunghwan Bang
core   +1 more source

Crystal structure of [UO2(NH3)5]NO3·NH3

, 2016
Pentaammine dioxide uranium(V) nitrate ammonia (1/1), [UO2(NH3)5]NO3·NH3, was obtained in the form of yellow crystals from the reaction of caesium uranyl nitrate, Cs[UO2(NO3)3], and uranium tetrafluoride, UF4, in dry liquid ammonia.
Florian Kraus, Patrick Woidy
core   +1 more source