Results 51 to 60 of about 10,667,646 (310)

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

Métodos para quantificar a volatilização de N-NH3 em solo fertilizado com uréia [PDF]

, 2015
As perdas gasosas nitrogenadas, principalmente por volatilizacao, sao consideraveis em diversas atividades agropecuarias, como na adubacao de pastagens. A utilizacao de metodos simples e acessiveis para mensurar essas perdas e de extrema necessidade na avaliacao do ciclo de N nesses sistemas. Assim, o objetivo desse trabalho foi determinar metodos para
openaire   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

曝气生物滤池去除二级出水中NH₃-N的试验研究

Gongye shui chuli, 2005
采用曝气生物滤池工艺对燕化公司西区污水处理场的二级出水进行了处理，研究了进水NH3-N浓度、COD浓度、m(COD)∶m(NH3-N)、碱度及气水比对NH3-N去除效果的影响。试验结果表明，当进水NH3-N质量浓度小于30mg/L时，曝气生物滤池对NH3-N具有良好的去除作用，平均NH3-N去除率达到90.4%，出水NH3-N质量浓度可降至1mg/L以下。NH3-N去除率随进水m(COD)∶m(NH3-N)的增加而降低；当进水m(COD)∶m(NH3-N)小于2.0时，NH3-N去除率达到90%以上 ...
王岽, 郦和生, 刘德华
doaj  

Ammonia volatilization in no-till system in the south-central region of the State of Paraná, Brazil Volatilização de amônia em plantio direto na região centro-sul do Paraná

Revista Brasileira de Ciência do Solo, 2010
Ammonia (NH3) volatilization can reduce the efficiency of urea applied to the surface of no-till (NT) soils. Thus, the objectives of this study were to evaluate the magnitude of NH3 losses from surface-applied urea and to determine if this loss justifies
Sandra Mara Vieira Fontoura, Cimélio Bayer   +1 more
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

Adsorption of NH3-N onto rice straw-derived biochar

, 2019
In this study, potential of rice straw-derived biochar as an NH3-N was evaluated. The aims of this study are to evaluate the NH3-N adsorption kinetics, examine NH3-N adsorption capacity, suggest the optimal pyrolysis temperature for NH3-N removal, and ...
김재영, Park, Man Ho, Jeong, Sangjae, Kim, Jae Young   +3 more
core   +1 more source

Rationally Designed Bilayer Passivation Strategy for High‐Performance Vacuum‐Processed Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A bilayer “Anchor‐and‐Seal” passivation strategy using EDAI2 and 4MeO‐PEAI effectively mitigates surface defects in vacuum‐processed perovskite films through synergistic hydrogen bonding and Lewis base coordination. This approach optimizes interfacial energy alignment and suppresses non‐radiative recombination, enabling vacuum‐deposited p‐i‐n ...
Mohammadhossein Kohan, Sang‐Heon Lee, Jaswinder Singh, Sung‐Nam Kwon, Seok‐In Na   +4 more
wiley   +1 more source