Microbial Denitrification: Active Site and Reaction Path Models Predict New Isotopic Fingerprints [0.03%]
微生物反硝化作用：活性位点和反应路径模型预测新同位素指纹
Jason D Boettger,Cajetan Neubauer,Sebastian H Kopf et al.
Jason D Boettger et al.
The study of isotopic fingerprints in nitrate (δ15N, δ18O, Δ17O) has enabled pivotal insights into the global nitrogen cycle and revealed new knowledge gaps. Measuring populations of isotopic homologs of intact NO3 - ions (isotopologues)...
Aerosol Mass Spectral Profiles from NAMaSTE Field-Sampled South Asian Combustion Sources [0.03%]
来自NAMaSTE现场采样的南亚燃烧源的气溶胶质谱特征
J Douglas Goetz,Michael R Giordano,Chelsea E Stockwell et al.
J Douglas Goetz et al.
Unit mass resolution mass spectral profiles of nonrefractory submicron aerosol were retrieved from undersampled atmospheric emission sources common to South Asia using a "mini" aerosol mass spectrometer. Emission sources including wood- and...
Zoë M Golay,Stephanie H Jones,D James Donaldson
Zoë M Golay
Road dust constitutes a prominent source of anthropogenic particulate matter, making its heterogeneous interactions with common atmospheric gas-phase compounds important. Here, we show that three distinct samples of urban road dust-includin...
Effects of Atmospheric Aging Processes on Nascent Sea Spray Aerosol Physicochemical Properties [0.03%]
大气老化过程对新生海盐气溶胶物理化学性质的影响
Chathuri P Kaluarachchi,Victor W Or,Yiling Lan et al.
Chathuri P Kaluarachchi et al.
The effects of atmospheric aging on single-particle nascent sea spray aerosol (nSSA) physicochemical properties, such as morphology, composition, phase state, and water uptake, are important to understanding their impacts on the Earth's cli...
Shielding from UV Photodamage: Implications for Surficial Origins of Life Chemistry on the Early Earth [0.03%]
紫外线光损的屏蔽：其对地球早期地表生命起源化学的意义
Zoe R Todd,Jack W Szostak,Dimitar D Sasselov
Zoe R Todd
UV light has been invoked as a source of energy for driving prebiotic chemistry, but such high energy photons are also known to cause damage to biomolecules and their precursors. One potential mechanism for increasing the lifetime of UV-pho...
Evaluation of the Sources, Precursors, and Processing of Aerosols at a High-Altitude Tropical Site [0.03%]
青藏高原南部纳木错地区气溶胶来源、前体物及其生成路径分析
Pamela A Dominutti,Emmanuel Chevassus,Jean-Luc Baray et al.
Pamela A Dominutti et al.
This work presents the results from a set of aerosol- and gas-phase measurements collected during the BIO-MAÏDO field campaign in Réunion between March 8 and April 5, 2019. Several offline and online sampling devices were installed at the...
Effect of Iron Isomorphic Substitution in Mg:Al and Zn:Al-Layered Double-Hydroxide Structures by Means of First Principle Calculations [0.03%]
铁在Mg:Al和Zn:Al层状双氢氧化物结构中类质同象替代的第一性原理计算研究
Carlos Pimentel,Alfonso Hernández-Laguna,C Ignacio Sainz-Díaz
Carlos Pimentel
Layered double hydroxides (LDHs) are important components in terrestrial and extra-terrestrial environments. The presence of iron in these minerals provides them a wide potential application in environmental and materials sciences. In this ...
Cluster Beam Study of (MgSiO3)+-Based Monomeric Silicate Species and Their Interaction with Oxygen: Implications for Interstellar Astrochemistry [0.03%]
基于(MgSiO3)+的单聚硅酸盐系群束研究及其与氧的相互作用：对星际天体化学的意义
Joan Mariñoso Guiu,Bianca-Andreea Ghejan,Thorsten M Bernhardt et al.
Joan Mariñoso Guiu et al.
Silicates are ubiquitously found as small dust grains throughout the universe. These particles are frequently subject to high-energy processes and subsequent condensation in the interstellar medium (ISM), where they are broken up into many ...
Reaction N(2D) + CH2CCH2 (Allene): An Experimental and Theoretical Investigation and Implications for the Photochemical Models of Titan [0.03%]
N(2D)+CH₂CCH₂(丙炔烯): 实验和理论研究及其对土卫六光化学模型的意义
Gianmarco Vanuzzo,Luca Mancini,Giacomo Pannacci et al.
Gianmarco Vanuzzo et al.
We report on a combined experimental and theoretical investigation of the N(2D) + CH2CCH2 (allene) reaction of relevance in the atmospheric chemistry of Titan. Experimentally, the reaction was investigated (i) under single-collision conditi...
Compositional Constraints are Vital for Atmospheric PM2.5 Source Attribution over India [0.03%]
组成约束对于印度PM2.5源归因至关重要
Sidhant J Pai,Colette L Heald,Hugh Coe et al.
Sidhant J Pai et al.
India experiences some of the highest levels of ambient PM2.5 aerosol pollution in the world. However, due to the historical dearth of in situ measurements, chemical transport models that are often used to estimate PM2.5 exposure over the r...