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The LAMOST Data Archive and Data Release
[article]
2016
arXiv
pre-print
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The Large sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is the largest optical telescope in China. In last four years, the LAMOST telescope has published four editions data (pilot data release, data release 1, data release 2 and data release 3). To archive and release these data (raw data, catalog, spectrum etc), we have set up a data cycle management system, including the transfer of data, archiving, backup. And through the evolution of four software versions, mature established data release system.
arXiv:1601.02334v1
fatcat:egkg6nst75cjbjgcc2h2x6xmta
IVOA HiPS Implementation in the Framework of WorldWide Telescope
[article]
2020
arXiv
pre-print
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The WorldWide Telescope(WWT) is a scientific visualization platform which can browse deep space images, star catalogs, and planetary remote sensing data from different observation facilities in a three-dimensional virtual scene. First launched and then open-sourced by Microsoft Research, the WWT is now managed by the American Astronomical Society (AAS). Hierarchical Progressive Survey (HiPS) is an astronomical data release scheme proposed by Centre de Donn\'ees astronomiques de Strasbourg (CDS)
arXiv:2003.02029v1
fatcat:4vf62hpogje4jdbrdvrxarrvwm
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... and has been accepted as a recommendation by International Virtual Observatory Alliance (IVOA). The HiPS solution has been adopted widely by many astronomical institutions for data release. Since WWT selected Hierarchical Triangular Mesh (HTM) as the standard for data visualization in the early stage of development, data released by HiPS cannot be visualized in WWT, which significantly limits the application of WWT. This paper introduces the implementation method for HiPS dataset visualization in WWT, and introduces HiPS data projection, mesh rendering, and data index implementation in WWT. Taking Chang'E-2 lunar probe data as an example, this paper introduces how to convert planetary remote sensing data into a HiPS dataset and integrate it into WWT. This paper also compares the efficiency and memory consumption of WWT loading its native data and HiPS data, and illustrates the application of HiPS in scientific data visualization and science education in WWT.
Strategy for synthesizing spherical LiNi 0.5 Mn 1.5 O 4 cathode material for lithium ion batteries
2015
Materials Chemistry and Physics
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尽管如此，通过对 Li-K 边和 Mn-M 23 边 元 素分布的 复合 (图 6(c))， 我们发 现 LiNi 0.5 Mn 1.5 O 4 材料表面出现了富 Mn 缺 Li 层。 ...
2 实验部分
2.1 LNMO 正极材料制备
实验材料为标准的尖晶石型镍锰酸锂
(LiNi 0.5 Mn 1.5 O 4 )，由共沉淀法制备，详细制备过程
见文献 19 。 ...
doi:10.1016/j.matchemphys.2014.12.030
fatcat:xo3sbsylpja4jcux7xwc6y6r4i
Recent advances in layered LiNi x CoyMn1−x−y O2 cathode materials for lithium ion batteries
2008
Journal of Solid State Electrochemistry
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Recent advances in layered LiNi x Co y Mn 1−x−y O 2 cathode materials are summarized in this paper. ...
Recently, intensive effort has been directed towards the development of LiNi x Co y Mn 1−x−y O 2 as a possible replacement for LiCoO 2 . ...
[72, 73] confirmed this by investigating LiNi 0.25 Co 0.5 Mn 0.25 O 2 and LiNi 0.125 Co 0.75 Mn 0.125 O 2 . ...
doi:10.1007/s10008-008-0671-7
fatcat:mtncubcuz5b2nivq4awmdrbn5q
Grain boundaries contribute to highly efficient lithium‐ion transport in advanced LiNi 0.8 Co 0.15 Al 0.05 O 2 secondary sphere with compact structure
2021
SusMat
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LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) secondary particles with high tap density have a great potential for high volumetric energy density lithium (Li)-ion power battery. ...
K E Y W O R D S compact structure, grain boundaries, graphene nanosheet, LiNi 0.8 Co 0.15 Al 0.05 O 2 , lithium-ion transport This is an open access article under the terms of the Creative Commons Attribution ...
Conventional layered structure LiCoO 2 is not suitable for large-scale applications in EV/PHEV due to its poor safety performance and a relatively small amount of capacity (up to 160 mAh g -1 ). 4 LiNi ...
doi:10.1002/sus2.18
fatcat:rs63ntneordplgpies6no5ub2m
In situ X-ray diffraction and thermal analysis of LiNi 0.8 Co 0.15 Al 0.05 O 2 synthesized via co-precipitation method
2018
Journal of Energy Chemistry
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LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) material is successfully synthesized with a modified co-precipitation method, in which NH 3 ·H 2 O and EDTA are used as two chelating agents. ...
The obtained LiNi 0.8 Co 0.15 Al 0.05 O 2 material has well-defined layered structure and uniform element distribution, which reveals an enhanced electrochemical performance with a capacity retention of ...
Table 1 . 1 Refined lattice parameters of the as-prepared LiNi 0.8 Co 0.15 Al 0.05 O 2 sample. ...
doi:10.1016/j.jechem.2018.06.007
fatcat:ozopgmgu4jes5f2hrx4skeps7m
Locating the Human Cardiac Conduction System Using a 3D Model of Its Nutritious Arteries
2017
Scientific Reports
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(A) HE staining (scale bar = 1200 μm). (B) Masson staining (scale bar = 1200 μm). ...
(A) HE staining (scale bar = 1200 μm). (B) Masson staining (scale bar = 1200 μm). (C) Immunofluorescence staining with the anti-PGP9.5 antibody. ...
doi:10.1038/s41598-017-00504-1
pmid:28336939
pmcid:PMC5428715
fatcat:r74zupmghbdjzo5dmzqggunaee
A hybrid architecture for astronomical computing
[article]
2018
arXiv
pre-print
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With many large science equipment constructing and putting into use, astronomy has stepped into the big data era. The new method and infrastructure of big data processing has become a new requirement of many astronomers. Cloud computing, Map/Reduce, Hadoop, Spark, etc. many new technology has sprung up in recent years. Comparing to the high performance computing(HPC), Data is the center of these new technology. So, a new computing architecture infrastructure is necessary, which can be shared by
arXiv:1801.07548v1
fatcat:imzkouqu4rawpglxw67r2yhznu
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... both HPC and big data processing. Based on Astronomy Cloud project of Chinese Virtual Observatory (China-VO), we have made much efforts to optimize the designation of the hybrid computing platform. which include the hardware architecture, cluster management, Job and Resource scheduling.
Zur anomalen Feinstruktur der He+-Linie γ=4686 Å
1950
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Quantenelektrodynamik Zur anomalen Feinstruktur der He -Linie y 4686 A von H. Kopfermami (nach gemeinsamer Untersuchung mit H. Krüger und II. Öhlmann). ...
. - P"3 gegen den aus der Sommerfeld-Dirac'schen Feinstrukturformel folgenden gemeinsamen Wert wurde in der Feinstruktur der He -Linie r 4686 A aus 20 Fabry-Perot-Aufnahmen mit 2 mm und 2,4 nun Etalon ...
doi:10.5169/seals-422248
fatcat:th3gytxedzdcbjyea7sao7ew6u
Identification of Biomarkers for Osteosarcoma Based on Integration Strategy
2020
Medical Science Monitor
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BACKGROUND Osteosarcoma (OS) is the most common primary malignant tumor of bone. The identification of novel biomarkers is necessary for the diagnosis and treatment of osteosarcoma. MATERIAL AND METHODS We obtained 11 paired fresh-frozen OS samples and normal controls from patients between September 2015 and February 2017. We used an integration strategy that analyzes next-generation sequencing data by bioinformatics methods based on the pathogenesis of osteosarcoma. RESULTS One susceptibility
doi:10.12659/msm.920803
pmid:32173717
pmcid:PMC7101204
fatcat:bzr33vfnsvhx7d2smvnshr4o6m
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... ncRNA and 7 susceptibility genes regulated by the lncRNA for osteosarcoma were effectively identified, and real-time PCR and clinical index ALP data were used to test their effectiveness. CONCLUSIONS The results showed that the expression levels of the 7 genes were highly consistent in the training and test sample sets, especially between the expression value of the gene ALPL and the plasma detection value of its encoded protein ALP. In particular, both the expression of gene ALPL and the plasma detection values of protein ALP encoded by gene ALPL showed a high degree of consistency among different data types. The identified lncRNA and genes effectively classified the samples proved so that they could be used as potential biomarkers of osteosarcoma. Our strategy may also be helpful for the identification of biomarkers for other diseases.
Update of the China-VO AstroCloud
[article]
2016
arXiv
pre-print
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As the cyber-infrastructure for Astronomical research from Chinese Virtual Observatory (China-VO) project, AstroCloud has been archived solid progresses during the last one year. Proposal management system and data access system are re-designed. Several new sub-systems are developed, including China-VO PaperData, AstroCloud Statics and Public channel. More data sets and application environments are integrated into the platform. LAMOST DR1, the largest astronomical spectrum archive was released
arXiv:1601.03155v1
fatcat:wzdblkvforfxhpesknqws6yyp4
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... o the public using the platform. The latest progresses will be introduced.
Horizontal Transfer of a Retrotransposon from the Rice Planthopper to the Genome of an Insect DNA Virus
2019
Journal of Virology
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Horizontal transfer of genetic materials between virus and host has been frequently identified. Three rice planthoppers, Laodelphax striatellus, Nilaparvata lugens, and Sogatella furcifera, are agriculturally important insects because they are destructive rice pests and also the vector of a number of phytopathogenic viruses. In this study, we discovered that a small region (∼300 nucleotides [nt]) of the genome of invertebrate iridescent virus 6 (IIV-6; genus Iridovirus, family Iridoviridae), a
doi:10.1128/jvi.01516-18
pmid:30626674
pmcid:PMC6401454
fatcat:rjgg4qctebhundgs6dfn7ghg3i
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... iant DNA virus that infects invertebrates but is not known to infect planthoppers, is highly homologous to the sequences present in high copy numbers in these three planthopper genomes. These sequences are related to the short interspersed nuclear elements (SINEs), a class of non-long terminal repeat (LTR) retrotransposons (retroposons), suggesting a horizontal transfer event of a transposable element from the rice planthopper genome to the IIV-6 genome. In addition, a number of planthopper transcripts mapped to these rice planthopper SINE-like sequences (RPSlSs) were identified and appear to be transcriptionally regulated along the different developmental stages of planthoppers. Small RNAs derived from these RPSlSs are predominantly 26 to 28 nt long, which is a typical characteristic of PIWI-interacting RNAs. Phylogenetic analysis suggests that IIV-6 acquires a SINE-like retrotransposon from S. furcifera after the evolutionary divergence of the three rice planthoppers. This study provides further examples of the horizontal transfer of an insect transposon to virus and suggests the association of rice planthoppers with iridoviruses in the past or present. IMPORTANCE This study provides an example of the horizontal transfer event from a rice planthopper genome to an IIV-6 genome. A small region of the IIV-6 genome (∼300 nt) is highly homologous to the sequences presented in high copy numbers of three rice planthopper genomes that are related to the SINEs, a class of retroposons. The expression of these planthopper SINE-like sequences was confirmed, and corresponding Piwi-interacting RNA-like small RNAs were identified and comprehensively characterized. Phylogenetic analysis suggests that the giant invertebrate iridovirus IIV-6 obtains this SINE-related sequence from Sogatella furcifera through a horizontal transfer event in the past. To the best of our knowledge, this is the first report of a horizontal transfer event between a planthopper and a giant DNA virus and also is the first evidence for the eukaryotic origin of genetic material in iridoviruses.
Involvement of the R2R3-MYB transcription factors MYB21 and its homologs in regulating the stamen flavonols accumulation in Arabidopsis
2021
Journal of Experimental Botany
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Flavonols are a subclass of flavonoids that exhibit a wide array of physiological functions in plants. Commonly found flavonols are synthesized from dihydroflavonols by flavonol synthase (FLS). The genome of Arabidopsis thaliana contains six FLS genes, among which, FLS1, encodes a functional enzyme. Previous work has demonstrated that R2R3-MYB subgroup 7 transcription factors MYB11, MYB12 and MYB111 redundantly regulate flavonol biosynthesis. However, flavonol accumulation in pollen grains was
doi:10.1093/jxb/erab156
pmid:33831169
pmcid:PMC8163065
fatcat:pt4wlwxt7fcmjfgver5uj34bmi
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... naffected in the myb11myb12myb111 triple mutant. Here we show that MYB21 and its homologs MYB24 and MYB57, which belong to subgroup 19, promote flavonol biosynthesis through regulation of FLS1 gene expression. A combination of genetic and metabolite analysis is used to identify the role of MYB21 in flavonol biosynthesis regulation through direct binding to the GARE cis-element in the FLS1 promoter. Interestingly, treatment with kaempferol or over-expression of FLS1 rescue stamen defects in the myb21 mutant. We also observed that excess ROS accumulated in myb21 stamen, and that treatment with dipenyleneiodonium chloride (DPI, a ROS inhibitor) can partly rescue the reduced-fertility of a myb21 mutant. Furthermore, drought stress increased ROS abundance and impaired fertility in myb21, myb21myb24myb57 and chs, but not in wild type or myb11myb12myb111. This suggested that pollen-specific flavonol accumulation contributes to drought-induced male fertility by ROS scavenging in Arabidopsis. These are previously unreported insights into the biological function of flavonols in Arabidopsis.
Natural Hybrid Origin of the Controversial "Species" Clematis × pinnata (Ranunculaceae) Based on Multidisciplinary Evidence
2021
Frontiers in Plant Science
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., 2011; He et al., 2021) . ...
Only recently have molecular phylogenetic studies clarified their close relationship (Xie et al., 2011; Lehtonen et al., 2016; Yan et al., 2016; He et al., 2021) . ...
doi:10.3389/fpls.2021.745988
pmid:34712260
pmcid:PMC8545901
fatcat:ekyusbyqq5e6jfgd22uw2wzl7u
A Conception of Engineering Design for Remote Unattended Operation Public Observatory
[article]
2018
arXiv
pre-print
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Public observatory project is playing more and more important role in science popularization education and scientific research, and many amateur astronomers also have began to build their own observatories in remote areas. As a result of the limitation of technical condition and construction funds for amateur astronomers, their system often breaks down, and then a stable remote unattended operation system becomes very critical. Hardware connection and control is the basic and core part in
arXiv:1801.03667v2
fatcat:kixm6el7gja3vo4g5exbixbfh4
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... atory design. Here we propose a conception of engineering hardware design for public observatory operation as a bridge between observatory equipment and observation software. It can not only satisfy multiple observation mode requirement, but also save cost.
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