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  • 1
    Online Resource
    Online Resource
    Disaster Intelligent Perception and Emergency Command of Power Grid (2023)
    Singapore : Springer
    Details Availability
    Type of Medium: Online Resource
    Pages: 1 online resource (376 pages)
    Edition: 1st ed.
    ISBN: 9789819972364
    URL: https://ebookcentral.proquest.com/lib/kxp/detail.action?docID=31016789
    Language: English
    Note: Description based on publisher supplied metadata and other sources
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  • 2
    Electronic Resource
    Electronic Resource
    BaM/Pt multilayered films with fine grains and large perpendicular magnetic anisotropy for high density recording media (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 6837-6839 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A magnetoplumbite type of Ba ferrite (BaM) thin layer was deposited on a 9 nm thick Pt underlayer, and excellent c-axis orientation was observed even for an 8 nm thick BaM layer, which corresponds to only three or four BaM unit cells. The grain size was almost in the same range of 60–85 nm even when the BaM layer thickness tBaM decreased from 60 to 17 nm, and tBaM should be reduced below 10 nm to make a grain size smaller than 50 nm. However, the perpendicular coercivity Hc⊥ and squareness S⊥ decreased drastically from 2.6 to 0.5 kOe and from 0.6 to 0.2, respectively, with the decrease of tBaM from 60 to 8 nm because of higher demagnetizing field and susceptibility to thermal fluctuation. On the other hand, the [BaM(5–24 nm)/Pt(9 nm)]3 multilayer exhibited higher Hc⊥ and larger S⊥ than the BaM/Pt bilayer for the same BaM layer thickness and Hc⊥ and S⊥ of the [BaM(8 nm)/Pt(9 nm)]3 multilayer was 2.0 kOe and 0.6, respectively. It was clarified that the deposition of the BaM/Pt multilayer was very effective for achieving a high perpendicular magnetic anisotropy constant even for the ultrathin BaM layer. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1359468
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Observation of resonant optical–phonon assisted tunneling in asymmetric double quantum wells (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 962-965 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Laser Raman microscope measurements in asymmetric double quantum wells with coupled narrow and wide quantum wells were performed to observe the nonequilibrium longitudinal-optical (LO) phonons that are generated by electrons during the phonon assisted tunneling. Both the Stokes and the anti-Stokes intensities show maxima at a certain applied voltage, where the calculated subband spacing between the wide and the narrow quantum well states is found to be equal to the LO phonon energy. This fact indicates that the population of nonequilibrium LO phonons becomes maximum when resonant LO phonon scattering occurs. A strong reduction in the photoluminescence intensity for the narrow quantum well is also observed at the same bias condition. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.366784
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  • 4
    Electronic Resource
    Electronic Resource
    A HU-like gene mutation in Rhizobium leguminosarum bv. viciae affects the expression of nodulation genes (2004)
    Oxford, UK : Blackwell Science Ltd
    Molecular microbiology 51 (2004), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: NodD is the major regulator of nod genes expression in rhizobia. Previously, a HU-like protein in Rhizobium leguminosarum bv. viciae has been identified to bind specifically with nod promoters and be involved in in vitro nodD transcription, but its in vivo function remained unknown. In this work we have cloned and sequenced the R. leguminosarum bv. viciae gene, named hurL, for this HU-like protein. Using the E. coli-expressed HurL proteins, we proved that HurL had high affinity to several nod promoters and showed a stimulation effect on in vitro nodD transcription at appropriate concentration. The R. leguminosarum bv. viciae hurL gene was mutated by insertion of a kanamycin resistance cassette. The obtained hurL mutant strain M704 exhibited poor growth under free-living conditions and failed to induce nodules on Pisum sativum cv. Frisson and Vicia hirsuta. Further studies of NodD production and nod genes-lacZ fusions expression in the hurL mutant revealed that inactivation of hurL led to severe impairment in the nodD expression, repression in the inducible expression of nodA and nodF, and slight enhancement in the expression of px2, a gene identified earlier in this lab. These results suggested that hurL might be required for maintaining the normal expression of nod genes in R. leguminosarum bv. viciae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2958.2003.03873.x
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  • 5
    Electronic Resource
    Electronic Resource
    Mouse-related dermatosis (2004)
    Oxford, UK : Blackwell Science Ltd
    International journal of dermatology 43 (2004), S. 0 
    Details
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-4632.2004.02299.x
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  • 6
    Electronic Resource
    Electronic Resource
    Development of a novel quadruple auxotrophic host transformation system by argB gene disruption using adeA gene and exploiting adenine auxotrophy in Aspergillus oryzae (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 239 (2004), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: We previously designed a triple auxotrophic host-vector system in Aspergillus oryzae by isolating red-colored adenine auxotrophic mutants upon UV mutagenesis of a double auxotrophic host (niaD−sC−). In the present study an effort to exploit this system and construct a novel quadruple auxotrophic host was made by disrupting the argB gene involved in arginine biosynthesis. The argB gene-disruption cassette was generated by fusion PCR, which required only two steps of PCR to insert the selectable marker, adeA, into the target argB gene. The chimeric DNA fragment was transformed into the triple auxotrophic strain (niaD−sC−adeA−) and the argB disruptants were obtained with a high rate of efficiency (approximately 40%). The argB disruptants were characterized by normal colony color and reversal of arginine auxotrophy by introduction of the wild-type argB gene. Quadruple auxotrophic strains (niaD−sC−ΔargB adeA− or niaD−sC−ΔargB adeB−) were subsequently isolated upon UV mutagenesis of the triple auxotrophic strain (niaD−sC−ΔargB) followed by screening of red-colored colonies for adenine auxotrophy. The results obtained showed that the adeA gene served as an efficient selection marker in developing a novel host-vector system with quadruple auxotrophy in A. oryzae, thus providing a powerful tool to breed multiple auxotrophic mutants from a deuteromycete wherein sexual crossing is impossible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2004.08.025
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  • 7
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    Sensors, Vol. 18, Pages 1919: An Improved Strong Tracking Cubature Kalman Filter for GPS/INS Integrated Navigation Systems (2018)
    MDPI Publishing
    In: Sensors
    Details
    Publication Date: 2018-06-13
    Description: Sensors, Vol. 18, Pages 1919: An Improved Strong Tracking Cubature Kalman Filter for GPS/INS Integrated Navigation Systems Sensors doi: 10.3390/s18061919 Authors: Kaiqiang Feng Jie Li Xi Zhang Xiaoming Zhang Chong Shen Huiliang Cao Yanyu Yang Jun Liu The cubature Kalman filter (CKF) is widely used in the application of GPS/INS integrated navigation systems. However, its performance may decline in accuracy and even diverge in the presence of process uncertainties. To solve the problem, a new algorithm named improved strong tracking seventh-degree spherical simplex-radial cubature Kalman filter (IST-7thSSRCKF) is proposed in this paper. In the proposed algorithm, the effect of process uncertainty is mitigated by using the improved strong tracking Kalman filter technique, in which the hypothesis testing method is adopted to identify the process uncertainty and the prior state estimate covariance in the CKF is further modified online according to the change in vehicle dynamics. In addition, a new seventh-degree spherical simplex-radial rule is employed to further improve the estimation accuracy of the strong tracking cubature Kalman filter. In this way, the proposed comprehensive algorithm integrates the advantage of 7thSSRCKF’s high accuracy and strong tracking filter’s strong robustness against process uncertainties. The GPS/INS integrated navigation problem with significant dynamic model errors is utilized to validate the performance of proposed IST-7thSSRCKF. Results demonstrate that the improved strong tracking cubature Kalman filter can achieve higher accuracy than the existing CKF and ST-CKF, and is more robust for the GPS/INS integrated navigation system.
    Electronic ISSN: 1424-8220
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by MDPI Publishing
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  • 8
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    [ASAP] Measurement and Correlation of the Electrical Conductivity of the Ionic Liquid [BMIM][TFSI] in Binary Organic Solvents (2018)
    American Chemical Society (ACS)
    Details
    Publication Date: 2018-03-27
    Description: Journal of Chemical & Engineering Data DOI: 10.1021/acs.jced.7b00646
    Print ISSN: 0021-9568
    Electronic ISSN: 1520-5134
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Published by American Chemical Society (ACS)
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  • 9
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    Benzyl butyl phthalate induces migration, invasion, and angiogenesis of Huh7 hepatocellular carcinoma cells through nongenomic AhR/G-protein signaling (2014)
    BioMed Central
    Details
    Publication Date: 2014-08-02
    Description: Background: The widespread use of phthalates as plasticizers has raised public health concerns regarding their adverse effects, including an association with cancer. Although animal investigations have suggested an association between phthalate exposure and hepatocellular carcinoma, the mechanisms are unknown. Methods: The hepatocellular carcinoma cell line Huh7 was treated with benzyl butyl phthalate (BBP), and then analyzed by total internal reflection fluorescence microscopy, confocal microscopy and double immunogold transmission electron microscopy. Following BBP treatment, mRNA levels were measured by RT-PCR, protein levels were measured using western blot, and vascular endothelial growth factor levels were measured by an enzyme-linked immunosorbent assay. Cell migration and invasion assays were evaluated by transwell, and angiogenesis were performed by a tube formation assay. Nude mice were used to investigate metastasis and angiogenesis in vivo. Results: BBP affected hepatocellular carcinoma progression through the aryl hydrocarbon receptor (AhR) and that benzyl butyl phthalate (BBP) stimulated AhR at the cell surface, which then interacted with G proteins and triggered a downstream signaling cascade. BBP activated AhR through a nongenomic action involving G-protein signaling rather than the classical genomic AhR action. BBP treatment promoted cell migration and invasion in vitro and metastasis in vivo via the AhR/Gbeta/PI3K/Akt/NF-kappaB pathway. In addition, BBP induced both in vitro and in vivo angiogenesis through the AhR/ERK/VEGF pathway. Conclusions: These findings suggest a novel nongenomic AhR mechanism involving G-protein signaling induced by phthalates, which contributes to tumor progression of hepatocellular carcinoma.
    Electronic ISSN: 1471-2407
    Topics: Medicine
    Published by BioMed Central
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  • 10
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    D-isoascorbyl palmitate: lipase-catalyzed synthesis, structural characterization and process optimization using response surface methodology (2013)
    Chemistry Central
    Details
    Publication Date: 2013-07-09
    Description: Background: Isoascorbic acid is a stereoisomer of L-ascorbic acid, and widely used as a food antioxidant. However, its highly hydrophilic behavior prevents its application in cosmetics or fats and oils-based foods. To overcome this problem, D-isoascorbyl palmitate was synthesized in the present study for improving the isoascorbic acid's oil solubility with an immobilized lipase in organic media. The structural information of synthesized product was clarified using LC-ESI-MS, FT-IR, 1H and 13C NMR analysis, and process parameters for high yield of D-isoascorbyl palmitate were optimized by using One--factor-at-a-time experiments and response surface methodology (RSM). Results: The synthesized product had the purity of 95% and its structural characteristics were confirmed as isoascorbyl palmitate by LC-ESI-MS, FT-IR, 1H, and 13C NMR analysis. Results from "one--factor-at-a-time" experiments indicated that the enzyme load, reaction temperature and D-isoascorbic-to-palmitic acid molar ratio had a significant effect on the D-isoascorbyl palmitate conversion rate. 95.32% of conversion rate was obtained by using response surface methodology (RSM) under the the optimized condition: enzyme load of 20% (w/w), reaction temperature of 53[degree sign]C and D- isoascorbic-to-palmitic acid molar ratio of 1:4when the reaction parameters were set as: acetone 20 mL, 40 g/L of molecular sieves content, 200 rpm speed for 24-h reaction time. Conclusion: The findings of this study can become a reference for developing industrial processes for the preparation of isoascorbic acid ester, which might be used in food additives, cosmetic formulations and for the synthesis of other isoascorbic acid derivatives.
    Electronic ISSN: 1752-153X
    Topics: Chemistry and Pharmacology
    Published by Chemistry Central
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