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We analyse a sample of 24 damped Lyman-alpha (DLA)/moderate DLA systems at 0.3<z<2.2, all with measurement of the weak MnII absorption lines, to investigate which elemental ratios could possibly be used as tracers of either dust depletion…

天体物理学 · 物理学 2009-11-07 C. Ledoux , J. Bergeron , P. Petitjean

Relative permittivities at 1 MHz, $\varepsilon_{\text{r}}$, and at (293.15-303.15) K are reported for the binary systems N,N-dimethylacetamide (DMA) + N-propylpropan-1-amine (DPA), + N-butylbutan-1-amine (DBA), + butan-1-amine (BA) or +…

Excess molar enthalpies, $H_{\text{m}}^{\text{E}}$, over the whole composition range have been determined for the liquid mixtures N,N-dimethylformamide (DMF) or N,N-dimethylacetamide (DMA) + butan-1-amine (BA), or + hexan-1-amine (HxA), or…

We study the nature of Damped Lyman -Alpha systems (DLAs) by means of a comparison between observed abundances and models of chemical evolution of galaxies of different morphological type. In particular, we compare for the first time the…

天体物理学 · 物理学 2009-11-07 F. Calura , F. Matteucci , G. Vladilo

The elemental abundances of stars reflect the complex enrichment history of the galaxy. To explore and explain the metal enrichment history of the cosmic environment near our solar system, we study the evolution of $^{56} \mathrm{Fe}$…

高能天体物理现象 · 物理学 2024-09-04 Yan-Qing Qi , Tong Liu , Mouyuan Sun , Zhen-Yi Cai

New quality productive forces (NQPF), digital economy advancement, and artificial intelligence (AI) technologies are becoming crucial for promoting sustainable urban development. This study proposes a Multi-head Attention Deep & Cross…

机器学习 · 计算机科学 2025-10-08 Haijin Xie , Gongquan Zhang

Coarse particulate matter (PM) is a serious air pollution problem in East Asia. Analysis of air quality network observations in the North China Plain and the Seoul Metropolitan Area shows that it is mainly anthropogenic and has decreased by…

Atmospheric chemistry encapsulates the emission of various pollutants, the complex chemistry reactions, and the meteorology dominant transport, which form a dynamic system that governs air quality. While deep learning (DL) models have shown…

大气与海洋物理 · 物理学 2025-10-08 Mijie Pang , Jianbing Jin , Arjo Segers , Hai Xiang Lin , Guoqiang Wang , Hong Liao , Wei Han

Multi-principal element alloys (MPEAs) are exciting systems showing remarkable properties compared to conventional materials due to their exceedingly large compositional space and spatially varying chemical environment. However, predicting…

材料科学 · 物理学 2022-09-12 Mauricio Ponga , Mohamed Hendy , Okan K. Orhan , Swarnava Ghosh

We have investigated chemical evolution in the young universe by analysing the detailed chemical enrichment pattern of a metal-rich galaxy at high redshift. The recent detection of over 20 elements in the gas-phase of a damped Lyman-alpha…

天体物理学 · 物理学 2009-11-10 Yeshe Fenner , Jason X. Prochaska , Brad K. Gibson

The prediction of nanoparticles (NPs) distribution is crucial for the diagnosis and treatment of tumors. Recent studies indicate that the heterogeneity of tumor microenvironment (TME) highly affects the distribution of NPs across tumors.…

计算机视觉与模式识别 · 计算机科学 2025-03-13 Junjie Zhou , Shouju Wang , Yuxia Tang , Qi Zhu , Daoqiang Zhang , Wei Shao

On the basis of detrended fluctuation analysis (DFA), we propose a new bivariate linear regression model. This new model provides estimators of multi-scale regression coefficients to measure the dependence between variables and…

应用统计 · 统计学 2019-05-27 Fang Wang , Lin Wang , Yuming Chen

Neutrino-dominated accretion flows (NDAFs) are one of the important MeV neutrino sources and significantly contribute to the cosmic diffuse neutrino background. In this paper, we investigate the spectrum of diffuse NDAF neutrino background…

高能天体物理现象 · 物理学 2024-03-26 Yun-Feng Wei , Tong Liu , Cui-Ying Song

The link between transport related emissions and human health is a major issue for city municipalities worldwide. PM emissions from exhaust and non-exhaust sources are one of the main worrying contributors to air-pollution. In this paper,…

系统与控制 · 电气工程与系统科学 2020-02-11 Panagiota Katsikouli , Pietro Ferraro , David Timoney , Robert Shorten

Atmospheric aerosol nucleation contributes to more than half of cloud condensation nuclei globally. The emissions, properties and concentrations of atmospheric aerosols or aerosol precursors could respond significantly to climate change.…

原子与分子团簇 · 物理学 2023-01-11 Shuai Jiang , Yi-Rong Liu , Teng Huang , Ya-Juan Feng , Chun-Yu Wang , Zhong-Quan Wang , Wei Huang

While astrochemical models are successful in reproducing many of the observed interstellar species, they have been struggling to explain the observed abundances of complex organic molecules. Current models tend to privilege grain surface…

太阳与恒星天体物理 · 物理学 2015-06-23 Nadia Balucani , Cecilia Ceccarelli , Vianney Taquet

Fine particulate matter (PM2.5) is associated with adverse human health effects, and China is currently suffering from serious PM2.5 pollution. To obtain spatially continuous ground-level PM2.5 concentrations, several models established by…

大气与海洋物理 · 物理学 2017-03-08 Tongwen Li , Huanfeng Shen , Chao Zeng , Qiangqiang Yuan , Liangpei Zhang

Emerin, a nuclear membrane protein with important biological roles in mechanotransduction and nuclear shape adaptation, self-assembles into nanometer-size domains at the inner nuclear membrane. The size and emerin occupancy of these…

生物物理 · 物理学 2024-07-17 Carlos D. Alas , Liying Wu , Fabien Pinaud , Christoph A. Haselwandter

Proton exchange membrane fuel cells (PEMFCs) are a promising clean energy technology, offering high efficiency and near-zero operational emissions for stationery and automotive applications. However, their widespread adoption remains…

材料科学 · 物理学 2026-03-30 Jack Jon Hinsch , Kazushi Fujimoto
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