LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 18863

Search options

  1. Article ; Online: Prediction of heptagonal bipyramidal nonacoordination in highly viable [OB-M©B7O7-BO]− (M = Fe, Ru, Os) complexes

    Bo Jin / Hai-Ru Li / Zhihong Wei / Miao Yan / Caixia Yuan / Yan-Bo Wu / Si-Dian Li

    Communications Chemistry, Vol 5, Iss 1, Pp 1-

    2022  Volume 7

    Abstract: ... spherical distributions of these atoms. Here, the authors predict that M-centered [OB-B7O7-BO] adopts ...

    Abstract Complexes possessing coordination spheres that can accommodate nine ligand atoms typically display spherical distributions of these atoms. Here, the authors predict that M-centered [OB-B7O7-BO] adopts unusual heptagonal bipyramidal nonacoordination.
    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  2. Article ; Online: Comments on "Does eco-friendly tourism necessary for entrepreneurship? The role of tourism and innovation in sustainable development" by Bo Song and Han Hongmei, https://doi.org/10.1007/s11356-023-28195-4.

    Wang, Yuan

    Environmental science and pollution research international

    2023  Volume 31, Issue 4, Page(s) 6586

    MeSH term(s) Tourism ; Sustainable Development ; Entrepreneurship
    Language English
    Publishing date 2023-12-08
    Publishing country Germany
    Document type Letter
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-023-30872-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Carbon nanofiber-supported B₂O₃–SnOₓ glasses as anode materials for high-performance lithium-ion batteries

    Li, Qian / Lan, Jin-Le / Liu, Yuan / Yu, Yunhua / Yang, Xiaoping

    RSC advances. 2015 Oct. 20, v. 5, no. 108

    2015  

    Abstract: A series of carbon nanofiber-supported B₂O₃–SnOₓ glasses (0B₂O₃–SnOₓ/CNFs, 0.5B₂O₃–SnOₓ/CNFs, 1 ... a subsequent stabilization and carbonization treatment. The amorphous B₂O₃–SnOₓ glass nanoparticles ... network structure of non-bridging oxygen (NBO: B–O⋯Sn) in the B₂O₃–SnOₓ glasses, which can not only buffer ...

    Abstract A series of carbon nanofiber-supported B₂O₃–SnOₓ glasses (0B₂O₃–SnOₓ/CNFs, 0.5B₂O₃–SnOₓ/CNFs, 1.5B₂O₃–SnOₓ/CNFs and 3B₂O₃–SnOₓ/CNFs) have been prepared by an electrospinning technique, and a subsequent stabilization and carbonization treatment. The amorphous B₂O₃–SnOₓ glass nanoparticles homogeneously dispersed in the carbon nanofibers (CNFs) matrix have been utilized as anode materials for lithium-ion batteries. The typical 1.5B₂O₃–SnOₓ/CNF nano hybrid anode material demonstrates the highest reversible capacity as well as superior cycling stability and rate performance by virtue of the special glass network structure of non-bridging oxygen (NBO: B–O⋯Sn) in the B₂O₃–SnOₓ glasses, which can not only buffer the large volume change of SnOₓ, but also prohibit the aggregation of Sn nanoparticles during the charge–discharge cycles.
    Keywords anodes ; carbon ; carbon nanofibers ; carbonization ; glass ; lithium batteries ; nanohybrids ; nanoparticles ; oxygen ; tin
    Language English
    Dates of publication 2015-1020
    Size p. 89099-89104.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/c5ra19387g
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  4. Article ; Online: A crossed molecular beam and ab initio investigation of the exclusive methyl loss pathway in the gas phase reaction of boron monoxide (BO; X2Σ+) with dimethylacetylene (CH3CCCH3; X1A(1g)).

    Kaiser, Ralf I / Maity, Surajit / Dangi, Beni B / Su, Yuan-Siang / Sun, B J / Chang, Agnes H H

    Physical chemistry chemical physics : PCCP

    2014  Volume 16, Issue 3, Page(s) 989–997

    Abstract: The crossed molecular beam reaction of boron monoxide ((11)BO; X(2)Σ(+)) with dimethylacetylene ... BO(X(2)Σ(+)) with the radical center located at the boron atom to the π electron density ... a methyl group (CH3) loss forming 1-propynyl boron monoxide (CH3CC(11)BO) in an overall exoergic reaction ...

    Abstract The crossed molecular beam reaction of boron monoxide ((11)BO; X(2)Σ(+)) with dimethylacetylene (CH3CCCH3; X(1)A(1g)) was investigated at a collision energy of 23.9 ± 1.5 kJ mol(-1). The scattering dynamics were suggested to be indirect (complex forming reaction) and were initiated by the addition of (11)BO(X(2)Σ(+)) with the radical center located at the boron atom to the π electron density at the acetylenic carbon-carbon triple bond without entrance barrier leading to cis-trans(11)BOC4H6 doublet radical intermediates. cis-(11)BOC4H6 underwent cis-trans isomerization followed by unimolecular decomposition via a methyl group (CH3) loss forming 1-propynyl boron monoxide (CH3CC(11)BO) in an overall exoergic reaction (experimental: -91 ± 22 kJ mol(-1); theoretical: -105 ± 9 kJ mol(-1); NIST: -104 ± 12 kJ mol(-1)) via a tight exit transition state; trans-(11)BOC4H6 was found to lose a methyl group instantaneously. Neither atomic nor molecular hydrogen loss pathways were detectable. The experimental finding of an exclusive methyl loss pathway gains full support from our computational study predicting a methyl group versus atomic hydrogen loss branching ratio of 99.99% to 0.01% forming 1-propynyl boron monoxide (CH3CC(11)BO) and 1-methyl-propadienyl boron monoxide (CH3((11)BO)CCCH2), respectively.
    Language English
    Publishing date 2014-01-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/c3cp53930j
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Mechanism and hydrophobic forces driving membrane protein insertion of subunit II of cytochrome bo 3 oxidase.

    Celebi, Nil / Dalbey, Ross E / Yuan, Jijun

    Journal of molecular biology

    2008  Volume 375, Issue 5, Page(s) 1282–1292

    Abstract: Subunit II (CyoA) of cytochrome bo(3) oxidase, which spans the inner membrane twice in bacteria ...

    Abstract Subunit II (CyoA) of cytochrome bo(3) oxidase, which spans the inner membrane twice in bacteria, has several unusual features in membrane biogenesis. It is synthesized with an amino-terminal cleavable signal peptide. In addition, distinct pathways are used to insert the two ends of the protein. The amino-terminal domain is inserted by the YidC pathway whereas the large carboxyl-terminal domain is translocated by the SecYEG pathway. Insertion of the protein is also proton motive force (pmf)-independent. Here we examined the topogenic sequence requirements and mechanism of insertion of CyoA in bacteria. We find that both the signal peptide and the first membrane-spanning region are required for insertion of the amino-terminal periplasmic loop. The pmf-independence of insertion of the first periplasmic loop is due to the loop's neutral net charge. We observe also that the introduction of negatively charged residues into the periplasmic loop makes insertion pmf dependent, whereas the addition of positively charged residues prevents insertion unless the pmf is abolished. Insertion of the carboxyl-terminal domain in the full-length CyoA occurs by a sequential mechanism even when the CyoA amino and carboxyl-terminal domains are swapped with other domains. However, when a long spacer peptide is added to increase the distance between the amino-terminal and carboxyl-terminal domains, insertion no longer occurs by a sequential mechanism.
    MeSH term(s) Catalysis ; Electron Transport Complex IV/biosynthesis ; Electron Transport Complex IV/chemistry ; Electron Transport Complex IV/genetics ; Electron Transport Complex IV/metabolism ; Electron Transport Complex IV/physiology ; Escherichia coli Proteins/biosynthesis ; Escherichia coli Proteins/chemistry ; Escherichia coli Proteins/genetics ; Escherichia coli Proteins/metabolism ; Hydrophobic and Hydrophilic Interactions ; Membrane Proteins/genetics ; Membrane Proteins/metabolism ; Membrane Transport Proteins/chemistry ; Membrane Transport Proteins/genetics ; Membrane Transport Proteins/metabolism ; Models, Biological ; Mutagenesis, Insertional ; Periplasm/chemistry ; Plasmids ; Protein Sorting Signals ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/biosynthesis ; Protein Subunits/chemistry ; Protein Subunits/genetics
    Chemical Substances Escherichia coli Proteins ; Membrane Proteins ; Membrane Transport Proteins ; Protein Sorting Signals ; Protein Subunits ; YIDC protein, E coli ; CyoA protein, E coli (EC 1.9.3.-) ; cytochrome o oxidase (EC 1.9.3.-) ; Electron Transport Complex IV (EC 1.9.3.1)
    Language English
    Publishing date 2008-02-01
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 80229-3
    ISSN 1089-8638 ; 0022-2836
    ISSN (online) 1089-8638
    ISSN 0022-2836
    DOI 10.1016/j.jmb.2007.11.054
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Book ; Online: Uso de excretas en la agricultura y la piscicultura / Ling Bo . [et al.]

    Ling, Bo / Den, Ting-xin / Lu, Zhi-ping / Min, Lou-wei / Wang, Zhu-xuen / Yuan, An-xiu

    1993  

    Keywords Agriculture ; Fisheries ; Parasitic diseases ; Sewage ; China ; Environment and Public Health ; transmission
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article: Novel broccoli 1-aminocyclopropane-1-carboxylate oxidase gene (Bo-ACO3) associated with the late stage of postharvest floret senescence.

    Yang, Chih-Yuan / Chu, Fang Hua / Wang, Yuh Tai / Chen, Yu-Ting / Yang, Shang Fa / Shaw, Jei-Fu

    Journal of agricultural and food chemistry

    2003  Volume 51, Issue 9, Page(s) 2569–2575

    Abstract: A novel 1-aminocyclopropane-1-carboxylate (ACC) oxidase gene (Bo-ACO3) was first isolated ... respectively. Bo-ACO3 shares 68% identity in the coding region with Bo-ACO1 (ACC Ox1) and Bo-ACO2 (ACC Ox2) and ... is quite divergent from the 3' untranslated regions. Bo-ACO3 transcript was accumulated to high ...

    Abstract A novel 1-aminocyclopropane-1-carboxylate (ACC) oxidase gene (Bo-ACO3) was first isolated from senescing broccoli florets by subtractive hybridization. The cDNA clone comprised a 963 bp open reading frame encoding a protein of 321 amino acids. The predicted molecular mass and pI were 36 kDa and 5.42, respectively. Bo-ACO3 shares 68% identity in the coding region with Bo-ACO1 (ACC Ox1) and Bo-ACO2 (ACC Ox2) and is quite divergent from the 3' untranslated regions. Bo-ACO3 transcript was accumulated to high levels only at the late stage of senescence after harvest. Southern blot hybridization using full-length cDNA as a probe suggested that the Bo-ACO3 gene is a single-copy gene in the broccoli genome. The deduced 321 amino acid sequence of Bo-ACO3 shares 70% identity with either Bo-ACO1 or Bo-ACO2. The BO-ACO3 gene was expressed in Escherichia coli as a 38 kDa active ACO enzyme. It was concluded that Bo-ACO3 is a senescence-associated gene involved in the late-phase senescence of postharvest broccoli.
    MeSH term(s) Amino Acid Oxidoreductases/chemistry ; Amino Acid Oxidoreductases/genetics ; Amino Acid Oxidoreductases/isolation & purification ; Amino Acid Sequence ; Base Sequence ; Brassica/enzymology ; Brassica/genetics ; DNA, Complementary/chemistry ; DNA, Plant/chemistry ; Gene Expression Regulation, Enzymologic ; Gene Expression Regulation, Plant ; Immunoblotting ; Molecular Sequence Data ; Molecular Weight ; Open Reading Frames ; Sequence Homology, Amino Acid
    Chemical Substances DNA, Complementary ; DNA, Plant ; Amino Acid Oxidoreductases (EC 1.4.-) ; 1-aminocyclopropane-1-carboxylic acid oxidase (EC 1.4.3.-)
    Language English
    Publishing date 2003-04-23
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/jf034007m
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Book ; Online: L' utilisation de vidanges en agriculture et en pisciculture / Ling Bo . [et al.]

    Ling, Bo / Den, Ting-xin / Lu, Zhi-ping / Min, Lou-wei / Wang, Zhu-xuen / Yuan, An-xiu

    1993  

    Keywords Agriculture ; Fisheries ; Parasitic diseases ; Sewage ; China ; Environment and Public Health ; transmission
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article: Novel Broccoli 1-Aminocyclopropane-1-carboxylate Oxidase Gene (Bo-ACO3) Associated with the Late Stage of Postharvest Floret Senescence

    Yang, Chih-Yuan / Chu, Fang Hua / Wang, Yuh Tai / Chen, Yu-Ting / Yang, Shang Fa / Shaw, Jei-Fu

    Journal of agricultural and food chemistry. 2003 Apr. 23, v. 51, no. 9

    2003  

    Abstract: A novel 1-aminocyclopropane-1-carboxylate (ACC) oxidase gene (Bo-ACO3) was first isolated ... respectively. Bo-ACO3 shares 68% identity in the coding region with Bo-ACO1 (ACC Ox1) and Bo-ACO2 (ACC Ox2) and ... is quite divergent from the 3‘ untranslated regions. Bo-ACO3 transcript was accumulated to high ...

    Abstract A novel 1-aminocyclopropane-1-carboxylate (ACC) oxidase gene (Bo-ACO3) was first isolated from senescing broccoli florets by subtractive hybridization. The cDNA clone comprised a 963 bp open reading frame encoding a protein of 321 amino acids. The predicted molecular mass and pI were 36 kDa and 5.42, respectively. Bo-ACO3 shares 68% identity in the coding region with Bo-ACO1 (ACC Ox1) and Bo-ACO2 (ACC Ox2) and is quite divergent from the 3‘ untranslated regions. Bo-ACO3 transcript was accumulated to high levels only at the late stage of senescence after harvest. Southern blot hybridization using full-length cDNA as a probe suggested that the Bo-ACO3 gene is a single-copy gene in the broccoli genome. The deduced 321 amino acid sequence of Bo-ACO3 shares 70% identity with either Bo-ACO1 or Bo-ACO2. The BO-ACO3 gene was expressed in Escherichia coli as a 38 kDa active ACO enzyme. It was concluded that Bo-ACO3 is a senescence-associated gene involved in the late-phase senescence of postharvest broccoli.
    Keywords Escherichia coli ; Southern blotting ; amino acid sequences ; amino acids ; aminocyclopropanecarboxylate oxidase ; broccoli ; complementary DNA ; florets ; genes ; molecular weight ; open reading frames ; senescence
    Language English
    Size p. 2569-2575.
    Document type Article
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/jf034007m
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Book ; Online: Use of night soil in agriculture and fish farming / Ling Bo . [et al.]

    Ling, Bo / Den, Ting-xin / Lu, Zhi-ping / Min, Lou-wei / Wang, Zhu-xuen / Yuan, An-xiu

    1993  

    Keywords Fertilizers ; Agriculture ; Fisheries ; Parasitic diseases ; Sewage ; China ; Environment and Public Health ; transmission
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

To top