Bidirectional Ecosystem-Atmosphere Fluxes of Volatile Organic Compounds Across the Mass Spectrum: How Many Matter? [0.03%]
质谱范围内的挥发性有机物生态系统-大气通量：哪些物质重要？
Dylan B Millet,Hariprasad D Alwe,Xin Chen et al.
Dylan B Millet et al.
Terrestrial ecosystems are simultaneously the largest source and a major sink of volatile organic compounds (VOCs) to the global atmosphere, and these two-way fluxes are an important source of uncertainty in current models. Here, we apply h...
Hydrothermal Decomposition of Amino Acids and Origins of Prebiotic Meteoritic Organic Compounds [0.03%]
氨基酸的热液分解与前生物陨落有机化合物的起源
Fabio Pietrucci,José C Aponte,Richard Starr et al.
Fabio Pietrucci et al.
The organic compounds found in carbonaceous chondrite meteorites provide insight into primordial solar system chemistry. Evaluating the formation and decomposition mechanisms of meteoritic amino acids may aid our understanding of the origin...
José C Aponte,Daniel Whitaker,Matthew W Powner et al.
José C Aponte et al.
Aliphatic aldehydes and ketones are essential building blocks for the synthesis of more complex organic compounds. Despite their potentially key role as precursors of astrobiologically important molecules, such as amino acids and carboxylic...
José C Aponte,Jamie E Elsila,Daniel P Glavin et al.
José C Aponte et al.
Glycine and methylamine are meteoritic water-soluble organic compounds that provide insights into the processes that occurred before, during, and after the formation of the Solar System. Both glycine and methylamine and many of their potent...
Resolving ambient organic aerosol formation and aging pathways with simultaneous molecular composition and volatility observations [0.03%]
利用分子组成和挥发性同时观测解析环境有机气溶胶生成及老化过程
Ben H Lee,Emma L D&#x;Ambro,Felipe D Lopez-Hilfiker et al.
Ben H Lee et al.
Organic aerosol (OA) constitutes a significant fraction of atmospheric fine particle mass. However, the precursors and chemical processes responsible for a majority of OA are rarely conclusively identified. We use online observations of hun...
Plutonium(IV) Sorption during Ferrihydrite Nanoparticle Formation [0.03%]
针铁矿纳米颗粒形成过程中的 plutonium(IV) 吸附作用
Kurt F Smith,Katherine Morris,Gareth T W Law et al.
Kurt F Smith et al.
Understanding interactions between iron (oxyhydr)oxide nanoparticles and plutonium is essential to underpin technology to treat radioactive effluents, in cleanup of land contaminated with radionuclides, and to ensure the safe disposal of ra...
Structure and Properties of Nanosilicates with Olivine (Mg2SiO4) N and Pyroxene (MgSiO3) N Compositions [0.03%]
橄榄石(Mg₂SiO₄)_n和辉石(MgSiO₃)_n纳米硅酸盐的结构与性质研究
Antoni Macià Escatllar,Tomas Lazaukas,Scott M Woodley et al.
Antoni Macià Escatllar et al.
Magnesium-rich silicates are ubiquitous both terrestrially and astronomically, where they are often present as small particles. Nanosized Mg-rich silicate particles are likely to be particularly important for understanding the formation, pr...
Solid-State Isomerization and Infrared Band Strengths of Two Conformational Isomers of Cyclopropanecarboxaldehyde, A Candidate Interstellar Molecule [0.03%]
环丙基甲醛两个构象异构体的固态异构化和红外带强度，一个星际候选分子
Reggie L Hudson,Falvia M Coleman
Reggie L Hudson
At least a dozen of the known interstellar molecules possess a formyl group (HCO), suggesting that other such species exist and await discovery in the interstellar medium. Here we examine the mid-infrared (mid-IR) spectrum and selected phys...
Experimental and theoretical investigation on the OH + CH3C(O)CH3 reaction at interstellar temperatures (T=11.7-64.4 K) [0.03%]
星际温度下羟基与丙酮甲基缩醛反应的实验和理论研究（11.7-64.4K）
Sergio Blázquez,Daniel González,Alberto García-Sáez et al.
Sergio Blázquez et al.
The rate coefficient, k(T), for the gas-phase reaction between OH radicals and acetone CH3C(O)CH3, has been measured using the pulsed CRESU (French acronym for Reaction Kinetics in a Uniform Supersonic Flow) technique (T = 11.7-64.4 K). The...
Calcium in Carbonate Water Facilitates the Transport of U(VI) in Brassica juncea Roots and Enables Root-to-Shoot Translocation [0.03%]
钙离子在碳酸盐溶液中促进芥菜对六价铀的吸收及向地上部运输
Eliane El Hayek,Adrian J Brearley,Tamara Howard et al.
Eliane El Hayek et al.
The role of calcium (Ca) on the cellular distribution of U(VI) in Brassica juncea roots and root-to-shoot translocation was investigated using hydroponic experiments, microscopy, and spectroscopy. Uranium accumulated mainly in the roots (72...