Results 41 to 50 of about 14,859,970 (317)

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

ADSORPTION OF AN NH₃ MOLECULE ON Cr(111) SURFACE BY QCMP 116 PROGRAM

Indonesian Journal of Chemistry, 2010
Interactions of an NH3 molecule on chromium (111) surface consists of 20 atoms with three layers has been studied by QCMP 116 (Calzaferri) program, run on IBM PC compatible (Pentium III, 660 MHz). An oncoming NH3 (with the planar molecular plane parallel
Charles Banon
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Field efficacy of urease inhibitors for mitigation of ammonia emissions in agricultural field settings: a systematic review

Frontiers in Environmental Science
Globally, ammonia (NH3) is one of the key air pollutants and reducing NH3 emissions and the associated indirect emission of the greenhouse gas nitrous oxide remains challenging for the agricultural sector.
Dumsane Themba Matse, Dominika J. Krol, Karl G. Richards, Martin Danaher, Enda Cummins, Xin Wang, Patrick J. Forrestal   +6 more
doaj   +1 more source

Volatilização de N-NH3 em decorrência da forma de aplicação de uréia, manejo de resíduos e tipo de solo, em laboratório [PDF]

Ciência Rural, 2003
A volatilização de amônia (NH3) é a principal perda de nitrogênio (N) responsável pela baixa eficiência da uréia aplicada na superfície do solo. Este trabalho objetivou avaliar os efeitos do modo de aplicação da uréia e da forma de manejo dos resíduos de aveia preta sobre a volatilização de amônia, em dois solos com diferentes teores de argila e ...
Sangoi, Luís, Ernani, Paulo Roberto, Lech, Vanderlei Adilson, Rampazzo, Clair   +3 more
openaire   +4 more sources

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

Advanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee, Yun‐Tae Kim, Hwarang Choi, Sanghwan Park, Seongyeop Lim, Chang Young Lee   +5 more
wiley   +1 more source

Annual consumption and types of synthetic nitrogen fertilizers: Ammonia emission indicators for mitigation strategies in the European Union

Environmental and Sustainability Indicators
Anthropogenic ammonia (NH3) emissions are primarily derived from agricultural activities. NH3 emissions from synthetic nitrogen (N) fertilizers are associated with the annual consumption of various N fertilizers.
Yuncai Hu, Urs Schmidhalter
doaj   +1 more source

Assessment of the crucial factors influencing the responses of ammonia and nitrous oxide emissions to controlled release nitrogen fertilizer: A meta-analysis

Journal of Integrative Agriculture, 2023
Reducing ammonia (NH3) and nitrous oxide (N2O) emissions have great effects on mitigating nitrogen (N) nutrient loss and greenhouse gas emissions. Controlled release urea (CRU) can control the N release rate, which reduces reactive N loss and increases ...
Hui-dan LÜ, Xi-ya WANG, Zhao-long PAN, Shi-cheng ZHAO   +3 more
doaj   +1 more source

Volatilização de N-NH3 na cultura de milho: I. efeito da irrigação e substituição parcial da uréia por sulfato de amônio [PDF]

Revista Brasileira de Ciência do Solo, 1997
Foi desenvolvido um experimento em latossolo vermelho-escuro muito argiloso fase cerrado, no Centro de Pesquisas Novartis-Seeds, Uberlândia (MG), para avaliar o efeito da irrigação e do N-uréia, em cobertura no milho, e de sua substituição parcial por sulfato de amônio, nas perdas de N-NH3 volatilizado.
Cabezas, W.A.R. Lara, Korndorfer, G.H., Motta, S.A.   +2 more
openaire   +4 more sources