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4. Formation and Stability of Dense Methane-Hydrogen Compounds

Author

Ranieri, Umbertoluca, Conway, Lewis J., Donnelly, Mary-Ellen, Hu, Huixin, Wang, Mengnan, Dalladay-Simpson, Philip, Peña-Alvarez, Miriam, Gregoryanz, Eugene, Hermann, Andreas, and Howie, Ross T.

Subjects
General Physics and Astronomy, ddc:530
Abstract

Physical review letters 128(21), 215702 (2022). doi:10.1103/PhysRevLett.128.215702, Through a series of x-ray diffraction, optical spectroscopy diamond anvil cell experiments, combined with density functional theory calculations, we explore the dense CH$_4$−H$_2$ system. We find that pressures as low as 4.8 GPa can stabilize CH$_4$(H$_2$)$_2$ and (CH$_4$)$_2$H$_2$, with the latter exhibiting extreme hardening of the intramolecular vibrational mode of H$_2$ units within the structure. On further compression, a unique structural composition, (CH$_4$)$_3$(H$_2$)$_{25}$, emerges. This novel structure holds a vast amount of molecular hydrogen and represents the first compound to surpass 50 wt % H$_2$. These compounds, stabilized by nuclear quantum effects, persist over a broad pressure regime, exceeding 160 GPa, Published by APS, College Park, Md.

Published
2022

5. Study on Proportion of Industrial Land Use in Chinese Cities and Its Influence Factors

Author

Lu Xu, Zhao Xiangyang, and Hu Huixin

Subjects
Environmental sciences, GE1-350
Abstract

This paper analyzed the proportion of industrial land to urban construction land on the basis of available data of China's urban land utilization, study the main factors influencing the proportion of industrial land of China's cities. According to the study results, the proportion of industrial land in most China's cities did not comply with the reference standard of 15%~30%; the solid-state distribution gravity of the current proportion to urban industrial land and the span of agglomeration range were obviously deviated from the standard value scope; the proportion of industrial land showed certain administrative grade, region and scale agglomeration characteristics, and the cities suffering with larger proportion of industrial land in geographical space were mostly distributed within the traditional industrial base and the industrial belt.

Published
2019
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11. Draft genome sequence of Acidithiobacillus ferrooxidansYQH-1

Author

Yan, Lei, Zhang, Shuang, Wang, Weidong, Hu, Huixin, Wang, Yanjie, Yu, Gaobo, and Chen, Peng

Abstract

Acidithiobacillus ferrooxidansYQH-1 is a moderate acidophilic bacterium isolated from a river in a volcano of Northeast China. Here, we describe the draft genome of strain YQH-1, which was assembled into 123 contigs containing 3,111,222bp with a G+C content of 58.63%. A large number of genes related to carbon dioxide fixation, dinitrogen fixation, pH tolerance, heavy metal detoxification, and oxidative stress defense were detected. The genome sequence can be accessed at DDBJ/EMBL/GenBank under the accession no. LJBT00000000.

Published
2015
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12. Draft genome of iron-oxidizing bacterium Leptospirillumsp. YQP-1 isolated from a volcanic lake in the Wudalianchi volcano, China

Author

Yan, Lei, Zhang, Shuang, Yu, Gaobo, Ni, Yongqing, Wang, Weidong, Hu, Huixin, and Chen, Peng

Abstract

Leptospirillumsp. YQP-1, a member of iron-oxidizing bacteria was isolated from volcanic lake in northeast China. Here, we report the draft genome sequence of the strain YQP-1 with a total genome size of 3,103,789bp from 85 scaffolds (104 contigs) with 58.64% G+C content. The genome sequence can be accessed at DDBJ/EMBL/GenBank under the accession no. LIEB00000000.

Published
2015
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