Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences
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Effect of Anatase TiO2 on Electrochemical Properties of Elongated Bending TiO2-Bronze nanowires for Lithium Ion Batteries
No full textExploring anode materials with excellent safety, high capacities and superior rate performance for lithium ion batteries remains a persistent objective. Herein, TiO2-bronze/anatase TiO2 hybrid nanowires are successfully prepared through a facile stirring hydrothermal method, which have elongated bending wire morphology and a heterojunction structure with TiO2-bronze and anatase TiO2 nanocrystal. The ratio of the two constituents can be easily adjusted by controlling the hydrothermal time, of which the growing orientation of the major TiO2-bronze is along < 110 > direction that facilitates the transport of Li+ ions. More importantly, the optimized hybrid material with 8.21% of anatase has superior electrochemical performances in terms of specific capacities, rate capability and cycling stability. Typically, the material shows a discharge capacity of 230.6 m Ah g(-1) at 1C rate with a capacity retention of 99% after 80 cycles, and also displays a discharge capacity of 145.7 mA h g(-1) even at a higher rate of 30C, which make it as promising anode material for high power rechargeable batteries. (C) 2016 Elsevier Ltd. All rights reserved
Photosynthetic production of ethanol from carbon dioxide in genetically engineered cyanobacteria (vol 5, pg 9857, 2012)
No full textPyrolysis Treatment of Chromite Ore Processing Residue by Biomass: Cellulose Pyrolysis and Cr(VI) Reduction Behavior
No full textThe pyrolysis treatment with biomass is a promising technology for the remediation of chromite-ore-processing, residue (COPR). However, the mechanism of this process is Still unclear. In this study, the behavior of pyrolysis reduction of Cr(VI) by cellulose, the main component of biomass, was elucidated. The results showed that the volatile fraction (VIE) of cellulose, ie. gas and tar, was responsible for Cr(VI) reduction. All organic compounds, as well as CO and H-2 in VF, potentially reduced Cr(VI). X-ray absorption near edge structure (XANES) spectroscopy and extended X-ray absorption fine-structure (EXAFS) spectroscopy confirmed the reduction of Cr(VI) to Cr(III) and the formation of amorphous Cr2O3. The remnant Cr(VI) content in COPR can be reduced below the detection limit (2 mg/kg) by the reduction of COPR particle and extension of reaction time between VF and COPR. This study provided a deep insight on the co-pyrolysis of cellulose with Cr(VI) in COPR and an ideal approach by which to characterize and optimize the pyrolysis treatment for COPR by other organics
MultiGeMS: detection of SNVs from multiple samples using model selection on high-throughput sequencing data
No full textMotivation: Single nucleotide variant (SNV) detection procedures are being utilized as never before to analyze the recent abundance of high-throughput DNA sequencing data, both on single and multiple sample datasets. Building on previously published work with the single sample SNV caller genotype model selection (GeMS), a multiple sample version of GeMS (MultiGeMS) is introduced. Unlike other popular multiple sample SNV callers, the MultiGeMS statistical model accounts for enzymatic substitution sequencing errors. It also addresses the multiple testing problem endemic to multiple sample SNV calling and utilizes high performance computing (HPC) techniques
Development of a 3-hydroxypropionate resistant Escherichia coli strain
No full text3-hydroxypropionate (3HP) is an important platform chemical, and its biosynthesis is severely restricted by the toxicity of 3HP on cell growth and survival. To improve Escherichia coli resistance to 3HP and reduce the total production cost in industrial applications, we have identified variations in protein expression level exposed to sub-lethal concentration of this chemical using 2-dimensional gel electrophoresis. Under 3HP stress, the amount of 46 proteins was increased while the amount of 23 proteins was reduced. According to the proteomic results, overexpression of some identified proteins significantly increased the E. coli survival rate under 3HP stress. This study shed light on clues for developing E. coli strains with higher resistance to 3HP toxicity and lower production cost for industrial applications
Insight into the effect of ion source for the solution processing of perovskite films
No full textWe find that there exists an ion exchange phenomenon in the precursor solutions for perovskite films. Despite the different ion introduction routes, the samples fabricated from precursor solutions with same ion molar ratio finally present similar properties. This finding illuminates a wide selectivity of reactants for the preparation of perovskite films
Decarboxylative/Sonogashira-type cross-coupling using PdCl2(Cy*Phine)(2)
No full textThe PdCl2(Cy*Phine)(2) precatalyst containing the meta-terarylphosphine ligand, Cy*Phine, can effectively mediate decarboxylative cross-coupling with a diverse range of (hetero-)aryl, aryl and alkyl chlorides including those with unprotected functionality. Using a facile and robust protocol, this process was extended to the first synthesis of symmetrical di(heteroaryl)alkynes via tandem Sonogashira/decarboxylative cross-coupling of heteroaryl chlorides and propiolic acid
Identification of an itaconic acid degrading pathway in itaconic acid producing Aspergillus terreus.
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